hi Andy,

Ok I got the Charlize today. Hooked up to a 9V simple adapter, quite a big
one non switching type, adde3d a 1500 uf cap to the PS, soldered a pair of
input RCA females, and (very barely able to) clip my speaker cable to the
circuit directly, and there is sound!
I used my mono FM tuner ( REL) to drive it to listen just 1 ch. The sound is
mellow on my Rega small floor standing speaker. But it does have a big sound
and good resolution. Then I used it to drive my 755A. Initially the sound is
a bit hard, after a few hours it mellowed down.
For the size, it is very good and convenient amp!
To compare to my tube amps, I think it could easily perform better then most
tubes amp that is not at optimum condition. But it still would not have the
air and weight for a good tube amps that is at optimum condition, and most
tube amps are not operating under optimum condition!! So this little amp
that could take simple power supply from 9-12V could sound better the those
tube amps indeed!
I will build a proper power supply, tweak it a bit then listen a bit longer.
What I could see is that the output printed circuit traces from the coils
are a bit too narrow and definitely it would not be good for the sound.
Unless it is designed that way to produce certain characteristic of the
sound.


Best rgds

William Lee

----- Original Message -----
From: "andy2667" <andy2667@...>
To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
Sent: Tuesday, November 29, 2005 11:01 PM
Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp


> Hi Top,
>
> Not heard the SI amp. The Charlize is said to be much better than the
> SI. FYI, the midrange of the Charlize is on the thick side compared
> with my DRD 300b. Yet, the clarity & resolution is excellent.
>
> Regards
>
> Andy
>
> --- In doctorjohn_CheapTubeAudio@yahoogroups.com, karma barfungpa
> <karmathk@y...> wrote:
>>
>> Howdy Andy,
>> I also tried the T-amp, albit the Sonic Impact varity,
>> modded it,and now it is in another avtar. I was also
>> very impressed with the sound the first time I heard
>> it,it was rather bright and very engaging. However
>> after a while the desire to listen to it diminished.
>>
>> A lot of time the Baritone voice needs to come from
>> the stomach, perhaps also the toukas (As some one once
>> said???), I just felt that the beautiful Baritone
>> coming from the T-amp was from the chest. The T-amp is
>> a Bocelli to the Tube amps Pavarotti.
>>
>> It is still a best buy for a lot of ears.
>> regards
>>
>> Tops
>>
>> --- andy2667 <andy2667@s...> wrote:
>>
>> > Hello DocJohn & Others,
>> >
>> > It seems that this forum is not as active as years
>> > ago. My discussion
>> > on Class-T may a little bit ouside Topic.Just want
>> > to share my
>> > experience in Class-T amp.
>> >
>> > I learnt a lot on tube audio from this forum,
>> > started in tube gears
>> > and settled down on tube amp searching sice
>> > completion of my DRD 300B
>> > from the Welborne Kit. Intended to explore more on
>> > other SET tube amps.
>> >
>> > My recent experience in class T am changed my mind.
>> > I acquired a very
>> > little class-T amp (a complete module need add on
>> > PSU and connectors)
>> > from diyparadise. Tried it and has been amazed.
>> > After a period of
>> > listening, my beloved DRD 300B may need to retire.
>> > Not saying that the
>> > Class-T amp sound better than the DRD300B. They
>> > sound different but
>> > both sound good to the same level. How amazing for
>> > this little class-T
>> > amp. It cost less than the pair of EH300B tubes. It
>> > is still in a
>> > small glimsy plastic box shipped with the amp
>> > module.
>> >
>> > What I need to power up the amp was to solder the
>> > necessary
>> > connector....RCA, Binding posts etc and connect the
>> > amp to a SMPS
>> > (switched mode Power Supply cost HK$1XX).
>> >
>> > The class-T amp is so efficient that it can be
>> > powered by 12V SLA
>> > battery. I think my journey to Tube AMP will stop
>> > here temporary. The
>> > class-T is so compact, small, efficient , flexible.
>> > It sound excellent
>> > too!
>> >
>> > No exotic Power cable, no PSU treatment!
>> >
>> > In my opinion, a new era in Hi-Fi audio will comes.
>> > Hi-Fi Pc, good
>> > class D, battery or SMPS powered gears.......
>> >
>> > By the way, battery powered NOS DAC sound very
>> > smooth and good. Not
>> > much experience in DAC. Has only used some cheapy
>> > CDP and old Philips
>> > CD880.
>> >
>> > I amp now using Class -T main amp, PC + hard disC +
>> > battery powered
>> > USB sound Card as main source, battery powered NOS
>> > DAC. The PC is so
>> > convenient that I will cease investigating LP as
>> > source.
>> >
>> > Hope my experience can provide some insights.
>> >
>> > Andy
>> >
>> >
>> >
>> >
>> >
>>
>>
>>
>>
>> __________________________________
>> Yahoo! Music Unlimited
>> Access over 1 million songs. Try it free.
>> http://music.yahoo.com/unlimited/
>>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>

Hi Kwing,

Have not yet fix it. The DRD300B is so much better than the cyber 30
that I have no urgency to fix it. I seldom listen to headphone now.
Maybe, I do not have a good headphone amp.

Andy

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, "Lee, Kwing Y
(Kwing)" <lky@l...> wrote:
>
> Hey Andy...did you ever fix your Cyber 30? I am using mine in my
office on headphones of course....
>
> -----Original Message-----
> From: doctorjohn_CheapTubeAudio@yahoogroups.com
[mailto:doctorjohn_CheapTubeAudio@yahoogroups.com]On Behalf Of andy2667
> Sent: Saturday, November 26, 2005 7:43 AM
> To: doctorjohn_CheapTubeAudio@yahoogroups.com
> Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp
>
>
> Hi all,
>
> Glad to know that there are other people love the Charlize (a class-T
> amp) too.
>
> 1. Comparison of Charize to Tube.
>
> I have not used lots of tube amp. I used to have a tube headphone amp
> and a Consonance Cyber 30 2A3 integrated. After lots of searching, I
> end up to have a pair Welborne DRD 300B. It is a lot better that my
> previous 2A3 and I like it very much thniking that it should be my
> ultimate amp. Tried the Charlize. All I can say is that the Charlize
> is as good as the DRD 300B although they are different. lots of
> details, resolutions and dynamics. I have replaced the DRD 300B by the
> Charlize and use the Charlize for a few weeks. Swap back to the 300B
> and find that I love both and have no reason not to use the Charlize
> as my main amp. Please not that I love good details & resolution as I
> used to use headphones.
>
> 2. What speaker I use
>
> My speakers are a pair of Bastanis Open baffle with active sub(the old
> version). I used to have a pair of Diatone P610MB. The Bastainis is
> much much better. With much better high and base, better sound stage,
> much much better resolution and dynamics yet as smooth as the Diatone.
>
>
> I decided to use the Charlize as my main amp and do not miss the 300B.
> My plan in ugrading power cords for the 300B and using balanced Power
> supply is no longer applicable. I haven't mod the Charlize. Maybe, I
> will replace some caps especially the electrolytic coupling caps by
> some good film or metalized film caps. I also intend to replace the
> glimsy plastic case b a good aluminium case.
>
> My system now is:
>
> DIY PC with 250G HDD->Creative Audigy 2NX USB sound card powered ny
> battery-> Monica 2 NOS DAC powered by Battery-> Charlize Powered by
> 10A 12V SMPS->Bastainis OB with active sub.
>
> CD ripping software is using EAC, playback software is using Foobar.
> Vol control is by Foobar internal Vol (i.e. no Pre amp).
>
> A very convenient system with compact components. Yet it sound good
to me.
>
> Is going to assemble a USB DAC from Audioworkshop. I also bought a
> AMP3 kit & a AMP6 kit from 41HZ. Yet to assemble them. I also have a
> Glane CLone kit (the premium kit) by PeterDaniel. Not yet assemble it.
> Will have a lot of funds on the kits on hand.
>
> Thanks for sharing.
>
> Andy
>
> --- In doctorjohn_CheapTubeAudio@yahoogroups.com, Andrew Brandon
> <ajbrandon@y...> wrote:
> >
> > Call Yeo at diyparadise,
> > Tell him I sent you (not that he knows who I am):-)
> > Order one and try it. Tell us what you think, good or
> > bad.
> > Do not "mod" it or anything just leave it as is.
> >
> > Andrew
> >
> > --- Janina Klamecki <klamfil@e...> wrote:
> >
> > > Hi Andrew
> > > You have lots of amps indeed. No, I did not hear
> > > Charlize .I thought
> > > all T-amps after mods sound close or have similar
> > > sonic signature and I
> > > was not thrilled by TEac- T-amp. It sounds thin and
> > > artificial and bass
> > > is muddy comparing to either 500c or 300B. It is a
> > > great value but not
> > > a competition for better SET . (I might still use it
> > > in Summer when my
> > > place reminds a sauna :0)  Regards, W
> > > On Friday, November 25, 2005, at 04:03 PM, Andrew
> > > Brandon wrote:
> > >
> > > > I use 208 Sigmas' (the original, not the EZ or
> > > > whatever the newer one is called) in Jerico horns,
> > > and
> > > > have others such as Swan D101a with FE108EZ, Swan
> > > D168
> > > > with fe168ES-R, Visaton B200 in OB,etc, and pre,
> > > > homebuilt FVP5A (I have others but nothing I have
> > > > sounds as good),Rega 2 TT,  NAD cd and old Pioneer
> > > > tuner.
> > > > Power Amps are AKSA 55W with my own slight mods,
> > > IGC
> > > > with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
> > > > mode", PP KT88, Transcendent SE OTL, SE IT 2A3
> > > etc.
> > > > Most of my equipment I have built myself.
> > > >
> > > > I cannot find a fault with the sound of Charlize.
> > > The
> > > > only strange thing I found was at first it sounded
> > > a
> > > > bit bass heavy around 60 - 80HZ, never measured it
> > > but
> > > > I no longer notice it so it went away.None of my
> > > > speakers have crossovers but I have a pair of
> > > > Scanspeak monitors (Kevlar / Revelator) that I
> > > could
> > > > try it with although they need some power to get
> > > > going.
> > > >
> > > > I had a Fisher 202c but it became a donor for its
> > > > OPT's. The 300B
> > > > I am not a fan of, or the ones I heard anyway.
> > > > Another amp that I think is wonderful is the
> > > > Transcendent SE OTL.
> > > > Have you tried the Charlize? You only mentioned
> > > the
> > > > Teac.
> > > >
> > > > Andrew
> > > >
> > > > --- Janina Klamecki <klamfil@e...> wrote:
> > > >
> > > > > Hi guys
> > > > > What speakers are you using? My experience with
> > > > > modded Teac ( hovland
> > > > > coupling caps  and connectors ) are not that
> > > great.
> > > > > Neither with OB
> > > > > design with altec 420 alnico nor with horns
> > > (fostex
> > > > > 208 in front
> > > > > traxtrix + jensen  alnico tweeter ) this amp
> > > sounded
> > > > > particularly
> > > > > interesting .I liked old Fisher 500c receiver
> > > better
> > > > > and my 300B
> > > > > (flesh& blood) is a totally different league. I
> > > > > drive with TEac
> > > > > Klipshorn bass horn for mentioned MF HF units
> > > and it
> > > > > sort of sucks too.
> > > > > Regards, Wojtek
> > > > > On Friday, November 25, 2005, at 02:31 PM,
> > > Andrew
> > > > > Brandon wrote:
> > > > >
> > > > > > Hello Andy,
> > > > > >
> > > > > > Welcome to the club. I got a Charlize ~ 6
> > > weeks
> > > > > ago
> > > > > > and have had to rethink my thinking.
> > > > > > Saying the Charlize is good would be a
> > > > > understatment,
> > > > > > it is very good. I am still amazed at how it
> > > > > sounds
> > > > > > and its so small. Anyone who does not think
> > > > > anything
> > > > > > so cheap and small cannot sound good should
> > > give
> > > > > it a
> > > > > > try. The only thing I miss with the tubes is
> > > the
> > > > > > building part, I love to machine metal and
> > > solder
> > > > > etc,
> > > > > > now it is unnecessary to go through all that
> > > work.
> > > > > > I use a tube preamp in front of mine.
> > > > > >
> > > > > > Andrew
> > > > > >
> > > > > > --- andy2667 <andy2667@s...> wrote:
> > > > > >
> > > > > > > Hello DocJohn & Others,
> > > > > > >
> > > > > > > It seems that this forum is not as active as
> > > > > years
> > > > > > > ago. My discussion
> > > > > > > on Class-T may a little bit ouside
> > > Topic.Just
> > > > > want
> > > > > > > to share my
> > > > > > > experience in Class-T amp.
> > > > > > >
> > > > > > > I learnt a lot on tube audio from this
> > > forum,
> > > > > > > started in tube gears
> > > > > > > and settled down on tube amp searching sice
> > > > > > > completion of my DRD 300B
> > > > > > > from the Welborne Kit. Intended to explore
> > > more
> > > > > on
> > > > > > > other SET tube amps.
> > > > > > >
> > > > > > > My recent experience in class T am changed
> > > my
> > > > > mind.
> > > > > > > I acquired a very
> > > > > > > little class-T amp (a complete module need
> > > add
> > > > > on
> > > > > > > PSU and connectors)
> > > > > > > from diyparadise. Tried it and has been
> > > amazed.
> > > > > > > After a period of
> > > > > > > listening, my beloved DRD 300B may need to
> > > > > retire.
> > > > > > > Not saying that the
> > > > > > > Class-T amp sound better than the DRD300B.
> > > They
> > > > > > > sound different but
> > > > > > > both sound good to the same level. How
> > > amazing
> > > > > for
> > > > > > > this little class-T
> > > > > > > amp. It cost less than the pair of EH300B
> > > tubes.
> > > > > It
> > > > > > > is still in a
> > > > > > > small glimsy plastic box shipped with the
> > > amp
> > > > > > > module.
> > > > > > >
> > > > > > > What I need to power up the amp was to
> > > solder
> > > > > the
> > > > > > > necessary
> > > > > > > connector....RCA, Binding posts etc and
> > > connect
> > > > > the
> > > > > > > amp to a SMPS
> > > > > > > (switched mode Power Supply cost HK$1XX).
> > > > > > >
> > > > > > > The class-T amp is so efficient that it can
> > > be
> > > > > > > powered by 12V SLA
> > > > > > > battery. I think my journey to Tube AMP will
> > > > > stop
> > > > > > > here temporary. The
> > > > > > > class-T is so compact, small, efficient ,
> > > > > flexible.
> > > > > > > It sound excellent
> > > > > > > too!
> > > > > > >
> > > > > > > No exotic Power cable, no PSU treatment!
> > > > > > >
> > > > > > > In my opinion, a new era in Hi-Fi audio will
> > > > > comes.
> > > > > > > Hi-Fi Pc, good
> > > > > > > class D, battery or SMPS powered
> > > gears.......
> > > > > > >
> > > > > > > By the way, battery powered NOS DAC sound
> > > very
> > > > > > > smooth and good. Not
> > > > > > > much experience in DAC. Has only used some
> > > > > cheapy
> > > > > > > CDP and old Philips
> > > > > > > CD880.
> > > > > > >
> > > > > > > I amp now using Class -T main amp, PC + hard
> > > > > disC +
> > > > > > > battery powered
> > > > > > > USB sound Card as main source, battery
> > > powered
> > >
> > === message truncated ===
> >
> >
> > Est autem fides credere quod nondum vides; cuius fidei merces est
> videre quod credis
> >
> >
> >
> >
> > __________________________________
> > Yahoo! Mail - PC Magazine Editors' Choice 2005
> > http://mail.yahoo.com <http://mail.yahoo.com>
> >
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Hi Top,

Not heard the SI amp. The Charlize is said to be much better than the
SI. FYI, the midrange of the Charlize is on the thick side compared
with my DRD 300b. Yet, the clarity & resolution is excellent.

Regards

Andy

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, karma barfungpa
<karmathk@y...> wrote:
>
> Howdy Andy,
> I also tried the T-amp, albit the Sonic Impact varity,
> modded it,and now it is in another avtar. I was also
> very impressed with the sound the first time I heard
> it,it was rather bright and very engaging. However
> after a while the desire to listen to it diminished.
>
> A lot of time the Baritone voice needs to come from
> the stomach, perhaps also the toukas (As some one once
> said???), I just felt that the beautiful Baritone
> coming from the T-amp was from the chest. The T-amp is
> a Bocelli to the Tube amps Pavarotti.
>
> It is still a best buy for a lot of ears.
> regards
>
> Tops
>
> --- andy2667 <andy2667@s...> wrote:
>
> > Hello DocJohn & Others,
> >
> > It seems that this forum is not as active as years
> > ago. My discussion
> > on Class-T may a little bit ouside Topic.Just want
> > to share my
> > experience in Class-T amp.
> >
> > I learnt a lot on tube audio from this forum,
> > started in tube gears
> > and settled down on tube amp searching sice
> > completion of my DRD 300B
> > from the Welborne Kit. Intended to explore more on
> > other SET tube amps.
> >
> > My recent experience in class T am changed my mind.
> > I acquired a very
> > little class-T amp (a complete module need add on
> > PSU and connectors)
> > from diyparadise. Tried it and has been amazed.
> > After a period of
> > listening, my beloved DRD 300B may need to retire.
> > Not saying that the
> > Class-T amp sound better than the DRD300B. They
> > sound different but
> > both sound good to the same level. How amazing for
> > this little class-T
> > amp. It cost less than the pair of EH300B tubes. It
> > is still in a
> > small glimsy plastic box shipped with the amp
> > module.
> >
> > What I need to power up the amp was to solder the
> > necessary
> > connector....RCA, Binding posts etc and connect the
> > amp to a SMPS
> > (switched mode Power Supply cost HK$1XX).
> >
> > The class-T amp is so efficient that it can be
> > powered by 12V SLA
> > battery. I think my journey to Tube AMP will stop
> > here temporary. The
> > class-T is so compact, small, efficient , flexible.
> > It sound excellent
> > too!
> >
> > No exotic Power cable, no PSU treatment!
> >
> > In my opinion, a new era in Hi-Fi audio will comes.
> > Hi-Fi Pc, good
> > class D, battery or SMPS powered gears.......
> >
> > By the way, battery powered NOS DAC sound very
> > smooth and good. Not
> > much experience in DAC. Has only used some cheapy
> > CDP and old Philips
> > CD880.
> >
> > I amp now using Class -T main amp, PC + hard disC +
> > battery powered
> > USB sound Card as main source, battery powered NOS
> > DAC. The PC is so
> > convenient that I will cease investigating LP as
> > source.
> >
> > Hope my experience can provide some insights.
> >
> > Andy
> >
> >
> >
> >
> >
>
>
>
>
> __________________________________
> Yahoo! Music Unlimited
> Access over 1 million songs. Try it free.
> http://music.yahoo.com/unlimited/
>

Howdy Andy,
I also tried the T-amp, albit the Sonic Impact varity,
modded it,and now it is in another avtar. I was also
very impressed with the sound the first time I heard
it,it was rather bright and very engaging. However
after a while the desire to listen to it diminished.

A lot of time the Baritone voice needs to come from
the stomach, perhaps also the toukas (As some one once
said???), I just felt that the beautiful Baritone
coming from the T-amp was from the chest. The T-amp is
a Bocelli to the Tube amps Pavarotti.

It is still a best buy for a lot of ears.
regards

Tops

--- andy2667 <andy2667@...> wrote:

> Hello DocJohn & Others,
>
> It seems that this forum is not as active as years
> ago. My discussion
> on Class-T may a little bit ouside Topic.Just want
> to share my
> experience in Class-T amp.
>
> I learnt a lot on tube audio from this forum,
> started in tube gears
> and settled down on tube amp searching sice
> completion of my DRD 300B
> from the Welborne Kit. Intended to explore more on
> other SET tube amps.
>
> My recent experience in class T am changed my mind.
> I acquired a very
> little class-T amp (a complete module need add on
> PSU and connectors)
> from diyparadise. Tried it and has been amazed.
> After a period of
> listening, my beloved DRD 300B may need to retire.
> Not saying that the
> Class-T amp sound better than the DRD300B. They
> sound different but
> both sound good to the same level. How amazing for
> this little class-T
> amp. It cost less than the pair of EH300B tubes. It
> is still in a
> small glimsy plastic box shipped with the amp
> module.
>
> What I need to power up the amp was to solder the
> necessary
> connector....RCA, Binding posts etc and connect the
> amp to a SMPS
> (switched mode Power Supply cost HK$1XX).
>
> The class-T amp is so efficient that it can be
> powered by 12V SLA
> battery. I think my journey to Tube AMP will stop
> here temporary. The
> class-T is so compact, small, efficient , flexible.
> It sound excellent
> too!
>
> No exotic Power cable, no PSU treatment!
>
> In my opinion, a new era in Hi-Fi audio will comes.
> Hi-Fi Pc, good
> class D, battery or SMPS powered gears.......
>
> By the way, battery powered NOS DAC sound very
> smooth and good. Not
> much experience in DAC. Has only used some cheapy
> CDP and old Philips
> CD880.
>
> I amp now using Class -T main amp, PC + hard disC +
> battery powered
> USB sound Card as main source, battery powered NOS
> DAC. The PC is so
> convenient that I will cease investigating LP as
> source.
>
> Hope my experience can provide some insights.
>
> Andy
>
>
>
>
>




__________________________________
Yahoo! Music Unlimited
Access over 1 million songs. Try it free.
http://music.yahoo.com/unlimited/

-----Original Message-----
From: doctorjohn_CheapTubeAudio@yahoogroups.com [mailto:doctorjohn_CheapTubeAudio@yahoogroups.com]On Behalf Of andy2667
Sent: Saturday, November 26, 2005 7:43 AM
To: doctorjohn_CheapTubeAudio@yahoogroups.com
Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp

Hi all,

Glad to know that there are other people love the Charlize (a class-T
amp) too.

1. Comparison of Charize to Tube.

I have not used lots of tube amp. I used to have a tube headphone amp
and a Consonance Cyber 30 2A3 integrated. After lots of searching, I
end up to have a pair Welborne DRD 300B. It is a lot better that my
previous 2A3 and I like it very much thniking that it should be my
ultimate amp. Tried the Charlize. All I can say is that the Charlize
is as good as the DRD 300B although they are different. lots of
details, resolutions and dynamics. I have replaced the DRD 300B by the
Charlize and use the Charlize for a few weeks. Swap back to the 300B
and find that I love both and have no reason not to use the Charlize
as my main amp. Please not that I love good details & resolution as I
used to use headphones.

2. What speaker I use

My speakers are a pair of Bastanis Open baffle with active sub(the old
version). I used to have a pair of Diatone P610MB. The Bastainis is
much much better. With much better high and base, better sound stage,
much much better resolution and dynamics yet as smooth as the Diatone.


I decided to use the Charlize as my main amp and do not miss the 300B.
My plan in ugrading power cords for the 300B and using balanced Power
supply is no longer applicable. I haven't mod the Charlize. Maybe, I
will replace some caps especially the electrolytic coupling caps by
some good film or metalized film caps. I also intend to replace the
glimsy plastic case b a good aluminium case.

My system now is:

DIY PC with 250G HDD->Creative Audigy 2NX USB sound card powered ny
battery-> Monica 2 NOS DAC powered by Battery-> Charlize Powered by
10A 12V SMPS->Bastainis OB with active sub.

CD ripping software is using EAC, playback software is using Foobar.
Vol control is by Foobar internal Vol (i.e. no Pre amp).

A very convenient system with compact components. Yet it sound good to me.

Is going to assemble a USB DAC from Audioworkshop. I also bought a
AMP3 kit & a AMP6 kit from 41HZ. Yet to assemble them. I also have a
Glane CLone kit (the premium kit) by PeterDaniel. Not yet assemble it.
Will have a lot of funds on the kits on hand.

Thanks for sharing.

Andy

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, Andrew Brandon
<ajbrandon@y...> wrote:
>
> Call Yeo at diyparadise,
> Tell him I sent you (not that he knows who I am):-)
> Order one and try it. Tell us what you think, good or
> bad.
> Do not "mod" it or anything just leave it as is.
>
> Andrew
>
> --- Janina Klamecki <klamfil@e...> wrote:
>
> > Hi Andrew
> > You have lots of amps indeed. No, I did not hear
> > Charlize .I thought
> > all T-amps after mods sound close or have similar
> > sonic signature and I
> > was not thrilled by TEac- T-amp. It sounds thin and
> > artificial and bass
> > is muddy comparing to either 500c or 300B. It is a
> > great value but not
> > a competition for better SET . (I might still use it
> > in Summer when my
> > place reminds a sauna :0)  Regards, W
> > On Friday, November 25, 2005, at 04:03 PM, Andrew
> > Brandon wrote:
> >
> > > I use 208 Sigmas' (the original, not the EZ or
> > > whatever the newer one is called) in Jerico horns,
> > and
> > > have others such as Swan D101a with FE108EZ, Swan
> > D168
> > > with fe168ES-R, Visaton B200 in OB,etc, and pre,
> > > homebuilt FVP5A (I have others but nothing I have
> > > sounds as good),Rega 2 TT,  NAD cd and old Pioneer
> > > tuner.
> > > Power Amps are AKSA 55W with my own slight mods,
> > IGC
> > > with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
> > > mode", PP KT88, Transcendent SE OTL, SE IT 2A3
> > etc.
> > > Most of my equipment I have built myself.
> > >
> > > I cannot find a fault with the sound of Charlize.
> > The
> > > only strange thing I found was at first it sounded
> > a
> > > bit bass heavy around 60 - 80HZ, never measured it
> > but
> > > I no longer notice it so it went away.None of my
> > > speakers have crossovers but I have a pair of
> > > Scanspeak monitors (Kevlar / Revelator) that I
> > could
> > > try it with although they need some power to get
> > > going.
> > >
> > > I had a Fisher 202c but it became a donor for its
> > > OPT's. The 300B
> > > I am not a fan of, or the ones I heard anyway.
> > > Another amp that I think is wonderful is the
> > > Transcendent SE OTL.
> > > Have you tried the Charlize? You only mentioned
> > the
> > > Teac.
> > >
> > > Andrew
> > >
> > > --- Janina Klamecki <klamfil@e...> wrote:
> > >
> > > > Hi guys
> > > > What speakers are you using? My experience with
> > > > modded Teac ( hovland
> > > > coupling caps  and connectors ) are not that
> > great.
> > > > Neither with OB
> > > > design with altec 420 alnico nor with horns
> > (fostex
> > > > 208 in front
> > > > traxtrix + jensen  alnico tweeter ) this amp
> > sounded
> > > > particularly
> > > > interesting .I liked old Fisher 500c receiver
> > better
> > > > and my 300B
> > > > (flesh& blood) is a totally different league. I
> > > > drive with TEac
> > > > Klipshorn bass horn for mentioned MF HF units
> > and it
> > > > sort of sucks too.
> > > > Regards, Wojtek
> > > > On Friday, November 25, 2005, at 02:31 PM,
> > Andrew
> > > > Brandon wrote:
> > > >
> > > > > Hello Andy,
> > > > >
> > > > > Welcome to the club. I got a Charlize ~ 6
> > weeks
> > > > ago
> > > > > and have had to rethink my thinking.
> > > > > Saying the Charlize is good would be a
> > > > understatment,
> > > > > it is very good. I am still amazed at how it
> > > > sounds
> > > > > and its so small. Anyone who does not think
> > > > anything
> > > > > so cheap and small cannot sound good should
> > give
> > > > it a
> > > > > try. The only thing I miss with the tubes is
> > the
> > > > > building part, I love to machine metal and
> > solder
> > > > etc,
> > > > > now it is unnecessary to go through all that
> > work.
> > > > > I use a tube preamp in front of mine.
> > > > >
> > > > > Andrew
> > > > >
> > > > > --- andy2667 <andy2667@s...> wrote:
> > > > >
> > > > > > Hello DocJohn & Others,
> > > > > >
> > > > > > It seems that this forum is not as active as
> > > > years
> > > > > > ago. My discussion
> > > > > > on Class-T may a little bit ouside
> > Topic.Just
> > > > want
> > > > > > to share my
> > > > > > experience in Class-T amp.
> > > > > >
> > > > > > I learnt a lot on tube audio from this
> > forum,
> > > > > > started in tube gears
> > > > > > and settled down on tube amp searching sice
> > > > > > completion of my DRD 300B
> > > > > > from the Welborne Kit. Intended to explore
> > more
> > > > on
> > > > > > other SET tube amps.
> > > > > >
> > > > > > My recent experience in class T am changed
> > my
> > > > mind.
> > > > > > I acquired a very
> > > > > > little class-T amp (a complete module need
> > add
> > > > on
> > > > > > PSU and connectors)
> > > > > > from diyparadise. Tried it and has been
> > amazed.
> > > > > > After a period of
> > > > > > listening, my beloved DRD 300B may need to
> > > > retire.
> > > > > > Not saying that the
> > > > > > Class-T amp sound better than the DRD300B.
> > They
> > > > > > sound different but
> > > > > > both sound good to the same level. How
> > amazing
> > > > for
> > > > > > this little class-T
> > > > > > amp. It cost less than the pair of EH300B
> > tubes.
> > > > It
> > > > > > is still in a
> > > > > > small glimsy plastic box shipped with the
> > amp
> > > > > > module.
> > > > > >
> > > > > > What I need to power up the amp was to
> > solder
> > > > the
> > > > > > necessary
> > > > > > connector....RCA, Binding posts etc and
> > connect
> > > > the
> > > > > > amp to a SMPS
> > > > > > (switched mode Power Supply cost HK$1XX).
> > > > > >
> > > > > > The class-T amp is so efficient that it can
> > be
> > > > > > powered by 12V SLA
> > > > > > battery. I think my journey to Tube AMP will
> > > > stop
> > > > > > here temporary. The
> > > > > > class-T is so compact, small, efficient ,
> > > > flexible.
> > > > > > It sound excellent
> > > > > > too!
> > > > > >
> > > > > > No exotic Power cable, no PSU treatment!
> > > > > >
> > > > > > In my opinion, a new era in Hi-Fi audio will
> > > > comes.
> > > > > > Hi-Fi Pc, good
> > > > > > class D, battery or SMPS powered
> > gears.......
> > > > > >
> > > > > > By the way, battery powered NOS DAC sound
> > very
> > > > > > smooth and good. Not
> > > > > > much experience in DAC. Has only used some
> > > > cheapy
> > > > > > CDP and old Philips
> > > > > > CD880.
> > > > > >
> > > > > > I amp now using Class -T main amp, PC + hard
> > > > disC +
> > > > > > battery powered
> > > > > > USB sound Card as main source, battery
> > powered
> >
> === message truncated ===
>
>
> Est autem fides credere quod nondum vides; cuius fidei merces est
videre quod credis
>
>
>      
>            
> __________________________________
> Yahoo! Mail - PC Magazine Editors' Choice 2005
> http://mail.yahoo.com
>

hi Andy,

Tks for the kind lead! Will read them and see how I sud do it!

Tks and best rgds

William Lee

----- Original Message -----
From: "andy2667" <andy2667@...>
To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
Sent: Sunday, November 27, 2005 4:08 PM
Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp


> Hi William,
>
> EAC is a good ripping software. It can be set to rip exact copy/min.
> error copy of audio files. You can also use other software but you
> need to set the setting to have quality as priority instead of speed
> as priority. The following links/web/forums has loads of good
> information for setting a good PC audio system.
>
> http://www.hydrogenaudio.org/forums/index.php
>
> http://www.odysseyaudiohk.com/cgi-bin/yabb/YaBB.pl?board=digital_gen
>
> http://www.audioasylum.com/forums/pcaudio/bbs.html
>
> You can find loads of information there. Be prepared to spent lots of
> time in the above net-resources and enjoy your PC system.
>
> Andy
>
> --- In doctorjohn_CheapTubeAudio@yahoogroups.com, "NPM" <npm98@p...>
> wrote:
>>
>> hi Andy,
>>
>> I wanted to use PC as digital storage as well, what is the important in
>> using EAC to rop the CD instead of just copying the CD to the disk
> directly?
>> For now I have an Iomega DVD super drive.
>>
>> tks and best rgds
>>
>> William Lee
>>
>> ----- Original Message -----
>> From: "andy2667" <andy2667@s...>
>> To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
>> Sent: Saturday, November 26, 2005 9:42 PM
>> Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp
>>
>>
>> > Hi all,
>> >
>> > Glad to know that there are other people love the Charlize (a class-T
>> > amp) too.
>> >
>> > 1. Comparison of Charize to Tube.
>> >
>> > I have not used lots of tube amp. I used to have a tube headphone amp
>> > and a Consonance Cyber 30 2A3 integrated. After lots of searching, I
>> > end up to have a pair Welborne DRD 300B. It is a lot better that my
>> > previous 2A3 and I like it very much thniking that it should be my
>> > ultimate amp. Tried the Charlize. All I can say is that the Charlize
>> > is as good as the DRD 300B although they are different. lots of
>> > details, resolutions and dynamics. I have replaced the DRD 300B by the
>> > Charlize and use the Charlize for a few weeks. Swap back to the 300B
>> > and find that I love both and have no reason not to use the Charlize
>> > as my main amp. Please not that I love good details & resolution as I
>> > used to use headphones.
>> >
>> > 2. What speaker I use
>> >
>> > My speakers are a pair of Bastanis Open baffle with active sub(the old
>> > version). I used to have a pair of Diatone P610MB. The Bastainis is
>> > much much better. With much better high and base, better sound stage,
>> > much much better resolution and dynamics yet as smooth as the Diatone.
>> >
>> >
>> > I decided to use the Charlize as my main amp and do not miss the 300B.
>> > My plan in ugrading power cords for the 300B and using balanced Power
>> > supply is no longer applicable. I haven't mod the Charlize. Maybe, I
>> > will replace some caps especially the electrolytic coupling caps by
>> > some good film or metalized film caps. I also intend to replace the
>> > glimsy plastic case b a good aluminium case.
>> >
>> > My system now is:
>> >
>> > DIY PC with 250G HDD->Creative Audigy 2NX USB sound card powered ny
>> > battery-> Monica 2 NOS DAC powered by Battery-> Charlize Powered by
>> > 10A 12V SMPS->Bastainis OB with active sub.
>> >
>> > CD ripping software is using EAC, playback software is using Foobar.
>> > Vol control is by Foobar internal Vol (i.e. no Pre amp).
>> >
>> > A very convenient system with compact components. Yet it sound
> good to me.
>> >
>> > Is going to assemble a USB DAC from Audioworkshop. I also bought a
>>

Hi William,

EAC is a good ripping software. It can be set to rip exact copy/min.
error copy of audio files. You can also use other software but you
need to set the setting to have quality as priority instead of speed
as priority. The following links/web/forums has loads of good
information for setting a good PC audio system.

http://www.hydrogenaudio.org/forums/index.php

http://www.odysseyaudiohk.com/cgi-bin/yabb/YaBB.pl?board=digital_gen

http://www.audioasylum.com/forums/pcaudio/bbs.html

You can find loads of information there. Be prepared to spent lots of
time in the above net-resources and enjoy your PC system.

Andy

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, "NPM" <npm98@p...>
wrote:
>
> hi Andy,
>
> I wanted to use PC as digital storage as well, what is the important in
> using EAC to rop the CD instead of just copying the CD to the disk
directly?
> For now I have an Iomega DVD super drive.
>
> tks and best rgds
>
> William Lee
>
> ----- Original Message -----
> From: "andy2667" <andy2667@s...>
> To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
> Sent: Saturday, November 26, 2005 9:42 PM
> Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp
>
>
> > Hi all,
> >
> > Glad to know that there are other people love the Charlize (a class-T
> > amp) too.
> >
> > 1. Comparison of Charize to Tube.
> >
> > I have not used lots of tube amp. I used to have a tube headphone amp
> > and a Consonance Cyber 30 2A3 integrated. After lots of searching, I
> > end up to have a pair Welborne DRD 300B. It is a lot better that my
> > previous 2A3 and I like it very much thniking that it should be my
> > ultimate amp. Tried the Charlize. All I can say is that the Charlize
> > is as good as the DRD 300B although they are different. lots of
> > details, resolutions and dynamics. I have replaced the DRD 300B by the
> > Charlize and use the Charlize for a few weeks. Swap back to the 300B
> > and find that I love both and have no reason not to use the Charlize
> > as my main amp. Please not that I love good details & resolution as I
> > used to use headphones.
> >
> > 2. What speaker I use
> >
> > My speakers are a pair of Bastanis Open baffle with active sub(the old
> > version). I used to have a pair of Diatone P610MB. The Bastainis is
> > much much better. With much better high and base, better sound stage,
> > much much better resolution and dynamics yet as smooth as the Diatone.
> >
> >
> > I decided to use the Charlize as my main amp and do not miss the 300B.
> > My plan in ugrading power cords for the 300B and using balanced Power
> > supply is no longer applicable. I haven't mod the Charlize. Maybe, I
> > will replace some caps especially the electrolytic coupling caps by
> > some good film or metalized film caps. I also intend to replace the
> > glimsy plastic case b a good aluminium case.
> >
> > My system now is:
> >
> > DIY PC with 250G HDD->Creative Audigy 2NX USB sound card powered ny
> > battery-> Monica 2 NOS DAC powered by Battery-> Charlize Powered by
> > 10A 12V SMPS->Bastainis OB with active sub.
> >
> > CD ripping software is using EAC, playback software is using Foobar.
> > Vol control is by Foobar internal Vol (i.e. no Pre amp).
> >
> > A very convenient system with compact components. Yet it sound
good to me.
> >
> > Is going to assemble a USB DAC from Audioworkshop. I also bought a
> > AMP3 kit & a AMP6 kit from 41HZ. Yet to assemble them. I also have a
> > Glane CLone kit (the premium kit) by PeterDaniel. Not yet assemble it.
> > Will have a lot of funds on the kits on hand.
> >
> > Thanks for sharing.
> >
> > Andy
> >
> > --- In doctorjohn_CheapTubeAudio@yahoogroups.com, Andrew Brandon
> > <ajbrandon@y...> wrote:
> >>
> >> Call Yeo at diyparadise,
> >> Tell him I sent you (not that he knows who I am):-)
> >> Order one and try it. Tell us what you think, good or
> >> bad.
> >> Do not "mod" it or anything just leave it as is.
> >>
> >> Andrew
> >>
> >> --- Janina Klamecki <klamfil@e...> wrote:
> >>
> >> > Hi Andrew
> >> > You have lots of amps indeed. No, I did not hear
> >> > Charlize .I thought
> >> > all T-amps after mods sound close or have similar
> >> > sonic signature and I
> >> > was not thrilled by TEac- T-amp. It sounds thin and
> >> > artificial and bass
> >> > is muddy comparing to either 500c or 300B. It is a
> >> > great value but not
> >> > a competition for better SET . (I might still use it
> >> > in Summer when my
> >> > place reminds a sauna :0)  Regards, W
> >> > On Friday, November 25, 2005, at 04:03 PM, Andrew
> >> > Brandon wrote:
> >> >
> >> > > I use 208 Sigmas' (the original, not the EZ or
> >> > > whatever the newer one is called) in Jerico horns,
> >> > and
> >> > > have others such as Swan D101a with FE108EZ, Swan
> >> > D168
> >> > > with fe168ES-R, Visaton B200 in OB,etc, and pre,
> >> > > homebuilt FVP5A (I have others but nothing I have
> >> > > sounds as good),Rega 2 TT,  NAD cd and old Pioneer
> >> > > tuner.
> >> > > Power Amps are AKSA 55W with my own slight mods,
> >> > IGC
> >> > > with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
> >> > > mode", PP KT88, Transcendent SE OTL, SE IT 2A3
> >> > etc.
> >> > > Most of my equipment I have built myself.
> >> > >
> >> > > I cannot find a fault with the sound of Charlize.
> >> > The
> >> > > only strange thing I found was at first it sounded
> >> > a
> >> > > bit bass heavy around 60 - 80HZ, never measured it
> >> > but
> >> > > I no longer notice it so it went away.None of my
> >> > > speakers have crossovers but I have a pair of
> >> > > Scanspeak monitors (Kevlar / Revelator) that I
> >> > could
> >> > > try it with although they need some power to get
> >> > > going.
> >> > >
> >> > > I had a Fisher 202c but it became a donor for its
> >> > > OPT's. The 300B
> >> > > I am not a fan of, or the ones I heard anyway.
> >> > > Another amp that I think is wonderful is the
> >> > > Transcendent SE OTL.
> >> > > Have you tried the Charlize? You only mentioned
> >> > the
> >> > > Teac.
> >> > >
> >> > > Andrew
> >> > >
> >> > > --- Janina Klamecki <klamfil@e...> wrote:
> >> > >
> >> > > > Hi guys
> >> > > > What speakers are you using? My experience with
> >> > > > modded Teac ( hovland
> >> > > > coupling caps  and connectors ) are not that
> >> > great.
> >> > > > Neither with OB
> >> > > > design with altec 420 alnico nor with horns
> >> > (fostex
> >> > > > 208 in front
> >> > > > traxtrix + jensen  alnico tweeter ) this amp
> >> > sounded
> >> > > > particularly
> >> > > > interesting .I liked old Fisher 500c receiver
> >> > better
> >> > > > and my 300B
> >> > > > (flesh& blood) is a totally different league. I
> >> > > > drive with TEac
> >> > > > Klipshorn bass horn for mentioned MF HF units
> >> > and it
> >> > > > sort of sucks too.
> >> > > > Regards, Wojtek
> >> > > > On Friday, November 25, 2005, at 02:31 PM,
> >> > Andrew
> >> > > > Brandon wrote:
> >> > > >
> >> > > > > Hello Andy,
> >> > > > >
> >> > > > > Welcome to the club. I got a Charlize ~ 6
> >> > weeks
> >> > > > ago
> >> > > > > and have had to rethink my thinking.
> >> > > > > Saying the Charlize is good would be a
> >> > > > understatment,
> >> > > > > it is very good. I am still amazed at how it
> >> > > > sounds
> >> > > > > and its so small. Anyone who does not think
> >> > > > anything
> >> > > > > so cheap and small cannot sound good should
> >> > give
> >> > > > it a
> >> > > > > try. The only thing I miss with the tubes is
> >> > the
> >> > > > > building part, I love to machine metal and
> >> > solder
> >> > > > etc,
> >> > > > > now it is unnecessary to go through all that
> >> > work.
> >> > > > > I use a tube preamp in front of mine.
> >> > > > >
> >> > > > > Andrew
> >> > > > >
> >> > > > > --- andy2667 <andy2667@s...> wrote:
> >> > > > >
> >> > > > > > Hello DocJohn & Others,
> >> > > > > >
> >> > > > > > It seems that this forum is not as active as
> >> > > > years
> >> > > > > > ago. My discussion
> >> > > > > > on Class-T may a little bit ouside
> >> > Topic.Just
> >> > > > want
> >> > > > > > to share my
> >> > > > > > experience in Class-T amp.
> >> > > > > >
> >> > > > > > I learnt a lot on tube audio from this
> >> > forum,
> >> > > > > > started in tube gears
> >> > > > > > and settled down on tube amp searching sice
> >> > > > > > completion of my DRD 300B
> >> > > > > > from the Welborne Kit. Intended to explore
> >> > more
> >> > > > on
> >> > > > > > other SET tube amps.
> >> > > > > >
> >> > > > > > My recent experience in class T am changed
> >> > my
> >> > > > mind.
> >> > > > > > I acquired a very
> >> > > > > > little class-T amp (a complete module need
> >> > add
> >> > > > on
> >> > > > > > PSU and connectors)
> >> > > > > > from diyparadise. Tried it and has been
> >> > amazed.
> >> > > > > > After a period of
> >> > > > > > listening, my beloved DRD 300B may need to
> >> > > > retire.
> >> > > > > > Not saying that the
> >> > > > > > Class-T amp sound better than the DRD300B.
> >> > They
> >> > > > > > sound different but
> >> > > > > > both sound good to the same level. How
> >> > amazing
> >> > > > for
> >> > > > > > this little class-T
> >> > > > > > amp. It cost less than the pair of EH300B
> >> > tubes.
> >> > > > It
> >> > > > > > is still in a
> >> > > > > > small glimsy plastic box shipped with the
> >> > amp
> >> > > > > > module.
> >> > > > > >
> >> > > > > > What I need to power up the amp was to
> >> > solder
> >> > > > the
> >> > > > > > necessary
> >> > > > > > connector....RCA, Binding posts etc and
> >> > connect
> >> > > > the
> >> > > > > > amp to a SMPS
> >> > > > > > (switched mode Power Supply cost HK$1XX).
> >> > > > > >
> >> > > > > > The class-T amp is so efficient that it can
> >> > be
> >> > > > > > powered by 12V SLA
> >> > > > > > battery. I think my journey to Tube AMP will
> >> > > > stop
> >> > > > > > here temporary. The
> >> > > > > > class-T is so compact, small, efficient ,
> >> > > > flexible.
> >> > > > > > It sound excellent
> >> > > > > > too!
> >> > > > > >
> >> > > > > > No exotic Power cable, no PSU treatment!
> >> > > > > >
> >> > > > > > In my opinion, a new era in Hi-Fi audio will
> >> > > > comes.
> >> > > > > > Hi-Fi Pc, good
> >> > > > > > class D, battery or SMPS powered
> >> > gears.......
> >> > > > > >
> >> > > > > > By the way, battery powered NOS DAC sound
> >> > very
> >> > > > > > smooth and good. Not
> >> > > > > > much experience in DAC. Has only used some
> >> > > > cheapy
> >> > > > > > CDP and old Philips
> >> > > > > > CD880.
> >> > > > > >
> >> > > > > > I amp now using Class -T main amp, PC + hard
> >> > > > disC +
> >> > > > > > battery powered
> >> > > > > > USB sound Card as main source, battery
> >> > powered
> >> >
> >> === message truncated ===
> >>
> >>
> >> Est autem fides credere quod nondum vides; cuius fidei merces est
> > videre quod credis
> >>
> >>
> >>
> >>
> >> __________________________________
> >> Yahoo! Mail - PC Magazine Editors' Choice 2005
> >> http://mail.yahoo.com
> >>
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>

hi Andy,

I wanted to use PC as digital storage as well, what is the important in
using EAC to rop the CD instead of just copying the CD to the disk directly?
For now I have an Iomega DVD super drive.

tks and best rgds

William Lee

----- Original Message -----
From: "andy2667" <andy2667@...>
To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
Sent: Saturday, November 26, 2005 9:42 PM
Subject: [doctorjohn_CheapTubeAudio] Re: Class T amp


> Hi all,
>
> Glad to know that there are other people love the Charlize (a class-T
> amp) too.
>
> 1. Comparison of Charize to Tube.
>
> I have not used lots of tube amp. I used to have a tube headphone amp
> and a Consonance Cyber 30 2A3 integrated. After lots of searching, I
> end up to have a pair Welborne DRD 300B. It is a lot better that my
> previous 2A3 and I like it very much thniking that it should be my
> ultimate amp. Tried the Charlize. All I can say is that the Charlize
> is as good as the DRD 300B although they are different. lots of
> details, resolutions and dynamics. I have replaced the DRD 300B by the
> Charlize and use the Charlize for a few weeks. Swap back to the 300B
> and find that I love both and have no reason not to use the Charlize
> as my main amp. Please not that I love good details & resolution as I
> used to use headphones.
>
> 2. What speaker I use
>
> My speakers are a pair of Bastanis Open baffle with active sub(the old
> version). I used to have a pair of Diatone P610MB. The Bastainis is
> much much better. With much better high and base, better sound stage,
> much much better resolution and dynamics yet as smooth as the Diatone.
>
>
> I decided to use the Charlize as my main amp and do not miss the 300B.
> My plan in ugrading power cords for the 300B and using balanced Power
> supply is no longer applicable. I haven't mod the Charlize. Maybe, I
> will replace some caps especially the electrolytic coupling caps by
> some good film or metalized film caps. I also intend to replace the
> glimsy plastic case b a good aluminium case.
>
> My system now is:
>
> DIY PC with 250G HDD->Creative Audigy 2NX USB sound card powered ny
> battery-> Monica 2 NOS DAC powered by Battery-> Charlize Powered by
> 10A 12V SMPS->Bastainis OB with active sub.
>
> CD ripping software is using EAC, playback software is using Foobar.
> Vol control is by Foobar internal Vol (i.e. no Pre amp).
>
> A very convenient system with compact components. Yet it sound good to me.
>
> Is going to assemble a USB DAC from Audioworkshop. I also bought a
> AMP3 kit & a AMP6 kit from 41HZ. Yet to assemble them. I also have a
> Glane CLone kit (the premium kit) by PeterDaniel. Not yet assemble it.
> Will have a lot of funds on the kits on hand.
>
> Thanks for sharing.
>
> Andy
>
> --- In doctorjohn_CheapTubeAudio@yahoogroups.com, Andrew Brandon
> <ajbrandon@y...> wrote:
>>
>> Call Yeo at diyparadise,
>> Tell him I sent you (not that he knows who I am):-)
>> Order one and try it. Tell us what you think, good or
>> bad.
>> Do not "mod" it or anything just leave it as is.
>>
>> Andrew
>>
>> --- Janina Klamecki <klamfil@e...> wrote:
>>
>> > Hi Andrew
>> > You have lots of amps indeed. No, I did not hear
>> > Charlize .I thought
>> > all T-amps after mods sound close or have similar
>> > sonic signature and I
>> > was not thrilled by TEac- T-amp. It sounds thin and
>> > artificial and bass
>> > is muddy comparing to either 500c or 300B. It is a
>> > great value but not
>> > a competition for better SET . (I might still use it
>> > in Summer when my
>> > place reminds a sauna :0)  Regards, W
>> > On Friday, November 25, 2005, at 04:03 PM, Andrew
>> > Brandon wrote:
>> >
>> > > I use 208 Sigmas' (the original, not the EZ or
>> > > whatever the newer one is called) in Jerico horns,
>> > and
>> > > have others such as Swan D101a with FE108EZ, Swan
>> > D168
>> > > with fe168ES-R, Visaton B200 in OB,etc, and pre,
>> > > homebuilt FVP5A (I have others but nothing I have
>> > > sounds as good),Rega 2 TT,  NAD cd and old Pioneer
>> > > tuner.
>> > > Power Amps are AKSA 55W with my own slight mods,
>> > IGC
>> > > with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
>> > > mode", PP KT88, Transcendent SE OTL, SE IT 2A3
>> > etc.
>> > > Most of my equipment I have built myself.
>> > >
>> > > I cannot find a fault with the sound of Charlize.
>> > The
>> > > only strange thing I found was at first it sounded
>> > a
>> > > bit bass heavy around 60 - 80HZ, never measured it
>> > but
>> > > I no longer notice it so it went away.None of my
>> > > speakers have crossovers but I have a pair of
>> > > Scanspeak monitors (Kevlar / Revelator) that I
>> > could
>> > > try it with although they need some power to get
>> > > going.
>> > >
>> > > I had a Fisher 202c but it became a donor for its
>> > > OPT's. The 300B
>> > > I am not a fan of, or the ones I heard anyway.
>> > > Another amp that I think is wonderful is the
>> > > Transcendent SE OTL.
>> > > Have you tried the Charlize? You only mentioned
>> > the
>> > > Teac.
>> > >
>> > > Andrew
>> > >
>> > > --- Janina Klamecki <klamfil@e...> wrote:
>> > >
>> > > > Hi guys
>> > > > What speakers are you using? My experience with
>> > > > modded Teac ( hovland
>> > > > coupling caps  and connectors ) are not that
>> > great.
>> > > > Neither with OB
>> > > > design with altec 420 alnico nor with horns
>> > (fostex
>> > > > 208 in front
>> > > > traxtrix + jensen  alnico tweeter ) this amp
>> > sounded
>> > > > particularly
>> > > > interesting .I liked old Fisher 500c receiver
>> > better
>> > > > and my 300B
>> > > > (flesh& blood) is a totally different league. I
>> > > > drive with TEac
>> > > > Klipshorn bass horn for mentioned MF HF units
>> > and it
>> > > > sort of sucks too.
>> > > > Regards, Wojtek
>> > > > On Friday, November 25, 2005, at 02:31 PM,
>> > Andrew
>> > > > Brandon wrote:
>> > > >
>> > > > > Hello Andy,
>> > > > >
>> > > > > Welcome to the club. I got a Charlize ~ 6
>> > weeks
>> > > > ago
>> > > > > and have had to rethink my thinking.
>> > > > > Saying the Charlize is good would be a
>> > > > understatment,
>> > > > > it is very good. I am still amazed at how it
>> > > > sounds
>> > > > > and its so small. Anyone who does not think
>> > > > anything
>> > > > > so cheap and small cannot sound good should
>> > give
>> > > > it a
>> > > > > try. The only thing I miss with the tubes is
>> > the
>> > > > > building part, I love to machine metal and
>> > solder
>> > > > etc,
>> > > > > now it is unnecessary to go through all that
>> > work.
>> > > > > I use a tube preamp in front of mine.
>> > > > >
>> > > > > Andrew
>> > > > >
>> > > > > --- andy2667 <andy2667@s...> wrote:
>> > > > >
>> > > > > > Hello DocJohn & Others,
>> > > > > >
>> > > > > > It seems that this forum is not as active as
>> > > > years
>> > > > > > ago. My discussion
>> > > > > > on Class-T may a little bit ouside
>> > Topic.Just
>> > > > want
>> > > > > > to share my
>> > > > > > experience in Class-T amp.
>> > > > > >
>> > > > > > I learnt a lot on tube audio from this
>> > forum,
>> > > > > > started in tube gears
>> > > > > > and settled down on tube amp searching sice
>> > > > > > completion of my DRD 300B
>> > > > > > from the Welborne Kit. Intended to explore
>> > more
>> > > > on
>> > > > > > other SET tube amps.
>> > > > > >
>> > > > > > My recent experience in class T am changed
>> > my
>> > > > mind.
>> > > > > > I acquired a very
>> > > > > > little class-T amp (a complete module need
>> > add
>> > > > on
>> > > > > > PSU and connectors)
>> > > > > > from diyparadise. Tried it and has been
>> > amazed.
>> > > > > > After a period of
>> > > > > > listening, my beloved DRD 300B may need to
>> > > > retire.
>> > > > > > Not saying that the
>> > > > > > Class-T amp sound better than the DRD300B.
>> > They
>> > > > > > sound different but
>> > > > > > both sound good to the same level. How
>> > amazing
>> > > > for
>> > > > > > this little class-T
>> > > > > > amp. It cost less than the pair of EH300B
>> > tubes.
>> > > > It
>> > > > > > is still in a
>> > > > > > small glimsy plastic box shipped with the
>> > amp
>> > > > > > module.
>> > > > > >
>> > > > > > What I need to power up the amp was to
>> > solder
>> > > > the
>> > > > > > necessary
>> > > > > > connector....RCA, Binding posts etc and
>> > connect
>> > > > the
>> > > > > > amp to a SMPS
>> > > > > > (switched mode Power Supply cost HK$1XX).
>> > > > > >
>> > > > > > The class-T amp is so efficient that it can
>> > be
>> > > > > > powered by 12V SLA
>> > > > > > battery. I think my journey to Tube AMP will
>> > > > stop
>> > > > > > here temporary. The
>> > > > > > class-T is so compact, small, efficient ,
>> > > > flexible.
>> > > > > > It sound excellent
>> > > > > > too!
>> > > > > >
>> > > > > > No exotic Power cable, no PSU treatment!
>> > > > > >
>> > > > > > In my opinion, a new era in Hi-Fi audio will
>> > > > comes.
>> > > > > > Hi-Fi Pc, good
>> > > > > > class D, battery or SMPS powered
>> > gears.......
>> > > > > >
>> > > > > > By the way, battery powered NOS DAC sound
>> > very
>> > > > > > smooth and good. Not
>> > > > > > much experience in DAC. Has only used some
>> > > > cheapy
>> > > > > > CDP and old Philips
>> > > > > > CD880.
>> > > > > >
>> > > > > > I amp now using Class -T main amp, PC + hard
>> > > > disC +
>> > > > > > battery powered
>> > > > > > USB sound Card as main source, battery
>> > powered
>> >
>> === message truncated ===
>>
>>
>> Est autem fides credere quod nondum vides; cuius fidei merces est
> videre quod credis
>>
>>
>>
>>
>> __________________________________
>> Yahoo! Mail - PC Magazine Editors' Choice 2005
>> http://mail.yahoo.com
>>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Hi all,

Glad to know that there are other people love the Charlize (a class-T
amp) too.

1. Comparison of Charize to Tube.

I have not used lots of tube amp. I used to have a tube headphone amp
and a Consonance Cyber 30 2A3 integrated. After lots of searching, I
end up to have a pair Welborne DRD 300B. It is a lot better that my
previous 2A3 and I like it very much thniking that it should be my
ultimate amp. Tried the Charlize. All I can say is that the Charlize
is as good as the DRD 300B although they are different. lots of
details, resolutions and dynamics. I have replaced the DRD 300B by the
Charlize and use the Charlize for a few weeks. Swap back to the 300B
and find that I love both and have no reason not to use the Charlize
as my main amp. Please not that I love good details & resolution as I
used to use headphones.

2. What speaker I use

My speakers are a pair of Bastanis Open baffle with active sub(the old
version). I used to have a pair of Diatone P610MB. The Bastainis is
much much better. With much better high and base, better sound stage,
much much better resolution and dynamics yet as smooth as the Diatone.


I decided to use the Charlize as my main amp and do not miss the 300B.
My plan in ugrading power cords for the 300B and using balanced Power
supply is no longer applicable. I haven't mod the Charlize. Maybe, I
will replace some caps especially the electrolytic coupling caps by
some good film or metalized film caps. I also intend to replace the
glimsy plastic case b a good aluminium case.

My system now is:

DIY PC with 250G HDD->Creative Audigy 2NX USB sound card powered ny
battery-> Monica 2 NOS DAC powered by Battery-> Charlize Powered by
10A 12V SMPS->Bastainis OB with active sub.

CD ripping software is using EAC, playback software is using Foobar.
Vol control is by Foobar internal Vol (i.e. no Pre amp).

A very convenient system with compact components. Yet it sound good to me.

Is going to assemble a USB DAC from Audioworkshop. I also bought a
AMP3 kit & a AMP6 kit from 41HZ. Yet to assemble them. I also have a
Glane CLone kit (the premium kit) by PeterDaniel. Not yet assemble it.
Will have a lot of funds on the kits on hand.

Thanks for sharing.

Andy

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, Andrew Brandon
<ajbrandon@y...> wrote:
>
> Call Yeo at diyparadise,
> Tell him I sent you (not that he knows who I am):-)
> Order one and try it. Tell us what you think, good or
> bad.
> Do not "mod" it or anything just leave it as is.
>
> Andrew
>
> --- Janina Klamecki <klamfil@e...> wrote:
>
> > Hi Andrew
> > You have lots of amps indeed. No, I did not hear
> > Charlize .I thought
> > all T-amps after mods sound close or have similar
> > sonic signature and I
> > was not thrilled by TEac- T-amp. It sounds thin and
> > artificial and bass
> > is muddy comparing to either 500c or 300B. It is a
> > great value but not
> > a competition for better SET . (I might still use it
> > in Summer when my
> > place reminds a sauna :0)  Regards, W
> > On Friday, November 25, 2005, at 04:03 PM, Andrew
> > Brandon wrote:
> >
> > > I use 208 Sigmas' (the original, not the EZ or
> > > whatever the newer one is called) in Jerico horns,
> > and
> > > have others such as Swan D101a with FE108EZ, Swan
> > D168
> > > with fe168ES-R, Visaton B200 in OB,etc, and pre,
> > > homebuilt FVP5A (I have others but nothing I have
> > > sounds as good),Rega 2 TT,  NAD cd and old Pioneer
> > > tuner.
> > > Power Amps are AKSA 55W with my own slight mods,
> > IGC
> > > with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
> > > mode", PP KT88, Transcendent SE OTL, SE IT 2A3
> > etc.
> > > Most of my equipment I have built myself.
> > >
> > > I cannot find a fault with the sound of Charlize.
> > The
> > > only strange thing I found was at first it sounded
> > a
> > > bit bass heavy around 60 - 80HZ, never measured it
> > but
> > > I no longer notice it so it went away.None of my
> > > speakers have crossovers but I have a pair of
> > > Scanspeak monitors (Kevlar / Revelator) that I
> > could
> > > try it with although they need some power to get
> > > going.
> > >
> > > I had a Fisher 202c but it became a donor for its
> > > OPT's. The 300B
> > > I am not a fan of, or the ones I heard anyway.
> > > Another amp that I think is wonderful is the
> > > Transcendent SE OTL.
> > > Have you tried the Charlize? You only mentioned
> > the
> > > Teac.
> > >
> > > Andrew
> > >
> > > --- Janina Klamecki <klamfil@e...> wrote:
> > >
> > > > Hi guys
> > > > What speakers are you using? My experience with
> > > > modded Teac ( hovland
> > > > coupling caps  and connectors ) are not that
> > great.
> > > > Neither with OB
> > > > design with altec 420 alnico nor with horns
> > (fostex
> > > > 208 in front
> > > > traxtrix + jensen  alnico tweeter ) this amp
> > sounded
> > > > particularly
> > > > interesting .I liked old Fisher 500c receiver
> > better
> > > > and my 300B
> > > > (flesh& blood) is a totally different league. I
> > > > drive with TEac
> > > > Klipshorn bass horn for mentioned MF HF units
> > and it
> > > > sort of sucks too.
> > > > Regards, Wojtek
> > > > On Friday, November 25, 2005, at 02:31 PM,
> > Andrew
> > > > Brandon wrote:
> > > >
> > > > > Hello Andy,
> > > > >
> > > > > Welcome to the club. I got a Charlize ~ 6
> > weeks
> > > > ago
> > > > > and have had to rethink my thinking.
> > > > > Saying the Charlize is good would be a
> > > > understatment,
> > > > > it is very good. I am still amazed at how it
> > > > sounds
> > > > > and its so small. Anyone who does not think
> > > > anything
> > > > > so cheap and small cannot sound good should
> > give
> > > > it a
> > > > > try. The only thing I miss with the tubes is
> > the
> > > > > building part, I love to machine metal and
> > solder
> > > > etc,
> > > > > now it is unnecessary to go through all that
> > work.
> > > > > I use a tube preamp in front of mine.
> > > > >
> > > > > Andrew
> > > > >
> > > > > --- andy2667 <andy2667@s...> wrote:
> > > > >
> > > > > > Hello DocJohn & Others,
> > > > > >
> > > > > > It seems that this forum is not as active as
> > > > years
> > > > > > ago. My discussion
> > > > > > on Class-T may a little bit ouside
> > Topic.Just
> > > > want
> > > > > > to share my
> > > > > > experience in Class-T amp.
> > > > > >
> > > > > > I learnt a lot on tube audio from this
> > forum,
> > > > > > started in tube gears
> > > > > > and settled down on tube amp searching sice
> > > > > > completion of my DRD 300B
> > > > > > from the Welborne Kit. Intended to explore
> > more
> > > > on
> > > > > > other SET tube amps.
> > > > > >
> > > > > > My recent experience in class T am changed
> > my
> > > > mind.
> > > > > > I acquired a very
> > > > > > little class-T amp (a complete module need
> > add
> > > > on
> > > > > > PSU and connectors)
> > > > > > from diyparadise. Tried it and has been
> > amazed.
> > > > > > After a period of
> > > > > > listening, my beloved DRD 300B may need to
> > > > retire.
> > > > > > Not saying that the
> > > > > > Class-T amp sound better than the DRD300B.
> > They
> > > > > > sound different but
> > > > > > both sound good to the same level. How
> > amazing
> > > > for
> > > > > > this little class-T
> > > > > > amp. It cost less than the pair of EH300B
> > tubes.
> > > > It
> > > > > > is still in a
> > > > > > small glimsy plastic box shipped with the
> > amp
> > > > > > module.
> > > > > >
> > > > > > What I need to power up the amp was to
> > solder
> > > > the
> > > > > > necessary
> > > > > > connector....RCA, Binding posts etc and
> > connect
> > > > the
> > > > > > amp to a SMPS
> > > > > > (switched mode Power Supply cost HK$1XX).
> > > > > >
> > > > > > The class-T amp is so efficient that it can
> > be
> > > > > > powered by 12V SLA
> > > > > > battery. I think my journey to Tube AMP will
> > > > stop
> > > > > > here temporary. The
> > > > > > class-T is so compact, small, efficient ,
> > > > flexible.
> > > > > > It sound excellent
> > > > > > too!
> > > > > >
> > > > > > No exotic Power cable, no PSU treatment!
> > > > > >
> > > > > > In my opinion, a new era in Hi-Fi audio will
> > > > comes.
> > > > > > Hi-Fi Pc, good
> > > > > > class D, battery or SMPS powered
> > gears.......
> > > > > >
> > > > > > By the way, battery powered NOS DAC sound
> > very
> > > > > > smooth and good. Not
> > > > > > much experience in DAC. Has only used some
> > > > cheapy
> > > > > > CDP and old Philips
> > > > > > CD880.
> > > > > >
> > > > > > I amp now using Class -T main amp, PC + hard
> > > > disC +
> > > > > > battery powered
> > > > > > USB sound Card as main source, battery
> > powered
> >
> === message truncated ===
>
>
> Est autem fides credere quod nondum vides; cuius fidei merces est
videre quod credis
>
>
>
>
> __________________________________
> Yahoo! Mail - PC Magazine Editors' Choice 2005
> http://mail.yahoo.com
>

Call Yeo at diyparadise,
Tell him I sent you (not that he knows who I am):-)
Order one and try it. Tell us what you think, good or
bad.
Do not "mod" it or anything just leave it as is.

Andrew

--- Janina Klamecki <klamfil@...> wrote:

> Hi Andrew
> You have lots of amps indeed. No, I did not hear
> Charlize .I thought
> all T-amps after mods sound close or have similar
> sonic signature and I
> was not thrilled by TEac- T-amp. It sounds thin and
> artificial and bass
> is muddy comparing to either 500c or 300B. It is a
> great value but not
> a competition for better SET . (I might still use it
> in Summer when my
> place reminds a sauna :0)  Regards, W
> On Friday, November 25, 2005, at 04:03 PM, Andrew
> Brandon wrote:
>
> > I use 208 Sigmas' (the original, not the EZ or
> > whatever the newer one is called) in Jerico horns,
> and
> > have others such as Swan D101a with FE108EZ, Swan
> D168
> > with fe168ES-R, Visaton B200 in OB,etc, and pre,
> > homebuilt FVP5A (I have others but nothing I have
> > sounds as good),Rega 2 TT,  NAD cd and old Pioneer
> > tuner.
> > Power Amps are AKSA 55W with my own slight mods,
> IGC
> > with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
> > mode", PP KT88, Transcendent SE OTL, SE IT 2A3
> etc.
> > Most of my equipment I have built myself.
> >
> > I cannot find a fault with the sound of Charlize.
> The
> > only strange thing I found was at first it sounded
> a
> > bit bass heavy around 60 - 80HZ, never measured it
> but
> > I no longer notice it so it went away.None of my
> > speakers have crossovers but I have a pair of
> > Scanspeak monitors (Kevlar / Revelator) that I
> could
> > try it with although they need some power to get
> > going.
> >
> > I had a Fisher 202c but it became a donor for its
> > OPT's. The 300B
> > I am not a fan of, or the ones I heard anyway.
> > Another amp that I think is wonderful is the
> > Transcendent SE OTL.
> > Have you tried the Charlize? You only mentioned
> the
> > Teac.
> >
> > Andrew
> >
> > --- Janina Klamecki <klamfil@...> wrote:
> >
> > > Hi guys
> > > What speakers are you using? My experience with
> > > modded Teac ( hovland
> > > coupling caps  and connectors ) are not that
> great.
> > > Neither with OB
> > > design with altec 420 alnico nor with horns
> (fostex
> > > 208 in front
> > > traxtrix + jensen  alnico tweeter ) this amp
> sounded
> > > particularly
> > > interesting .I liked old Fisher 500c receiver
> better
> > > and my 300B
> > > (flesh& blood) is a totally different league. I
> > > drive with TEac
> > > Klipshorn bass horn for mentioned MF HF units
> and it
> > > sort of sucks too.
> > > Regards, Wojtek
> > > On Friday, November 25, 2005, at 02:31 PM,
> Andrew
> > > Brandon wrote:
> > >
> > > > Hello Andy,
> > > >
> > > > Welcome to the club. I got a Charlize ~ 6
> weeks
> > > ago
> > > > and have had to rethink my thinking.
> > > > Saying the Charlize is good would be a
> > > understatment,
> > > > it is very good. I am still amazed at how it
> > > sounds
> > > > and its so small. Anyone who does not think
> > > anything
> > > > so cheap and small cannot sound good should
> give
> > > it a
> > > > try. The only thing I miss with the tubes is
> the
> > > > building part, I love to machine metal and
> solder
> > > etc,
> > > > now it is unnecessary to go through all that
> work.
> > > > I use a tube preamp in front of mine.
> > > >
> > > > Andrew
> > > >
> > > > --- andy2667 <andy2667@...> wrote:
> > > >
> > > > > Hello DocJohn & Others,
> > > > >
> > > > > It seems that this forum is not as active as
> > > years
> > > > > ago. My discussion
> > > > > on Class-T may a little bit ouside
> Topic.Just
> > > want
> > > > > to share my
> > > > > experience in Class-T amp.
> > > > >
> > > > > I learnt a lot on tube audio from this
> forum,
> > > > > started in tube gears
> > > > > and settled down on tube amp searching sice
> > > > > completion of my DRD 300B
> > > > > from the Welborne Kit. Intended to explore
> more
> > > on
> > > > > other SET tube amps.
> > > > >
> > > > > My recent experience in class T am changed
> my
> > > mind.
> > > > > I acquired a very
> > > > > little class-T amp (a complete module need
> add
> > > on
> > > > > PSU and connectors)
> > > > > from diyparadise. Tried it and has been
> amazed.
> > > > > After a period of
> > > > > listening, my beloved DRD 300B may need to
> > > retire.
> > > > > Not saying that the
> > > > > Class-T amp sound better than the DRD300B.
> They
> > > > > sound different but
> > > > > both sound good to the same level. How
> amazing
> > > for
> > > > > this little class-T
> > > > > amp. It cost less than the pair of EH300B
> tubes.
> > > It
> > > > > is still in a
> > > > > small glimsy plastic box shipped with the
> amp
> > > > > module.
> > > > >
> > > > > What I need to power up the amp was to
> solder
> > > the
> > > > > necessary
> > > > > connector....RCA, Binding posts etc and
> connect
> > > the
> > > > > amp to a SMPS
> > > > > (switched mode Power Supply cost HK$1XX).
> > > > >
> > > > > The class-T amp is so efficient that it can
> be
> > > > > powered by 12V SLA
> > > > > battery. I think my journey to Tube AMP will
> > > stop
> > > > > here temporary. The
> > > > > class-T is so compact, small, efficient ,
> > > flexible.
> > > > > It sound excellent
> > > > > too!
> > > > >
> > > > > No exotic Power cable, no PSU treatment!
> > > > >
> > > > > In my opinion, a new era in Hi-Fi audio will
> > > comes.
> > > > > Hi-Fi Pc, good
> > > > > class D, battery or SMPS powered
> gears.......
> > > > >
> > > > > By the way, battery powered NOS DAC sound
> very
> > > > > smooth and good. Not
> > > > > much experience in DAC. Has only used some
> > > cheapy
> > > > > CDP and old Philips
> > > > > CD880.
> > > > >
> > > > > I amp now using Class -T main amp, PC + hard
> > > disC +
> > > > > battery powered
> > > > > USB sound Card as main source, battery
> powered
>
=== message truncated ===


Est autem fides credere quod nondum vides; cuius fidei merces est videre quod
credis




__________________________________
Yahoo! Mail - PC Magazine Editors' Choice 2005
http://mail.yahoo.com

Hi Andrew
You have lots of amps indeed. No, I did not hear Charlize .I thought
all T-amps after mods sound close or have similar sonic signature and I
was not thrilled by TEac- T-amp. It sounds thin and artificial and bass
is muddy comparing to either 500c or 300B. It is a great value but not
a competition for better SET . (I might still use it in Summer when my
place reminds a sauna :0)  Regards, W
On Friday, November 25, 2005, at 04:03 PM, Andrew Brandon wrote:

> I use 208 Sigmas' (the original, not the EZ or
> whatever the newer one is called) in Jerico horns, and
> have others such as Swan D101a with FE108EZ, Swan D168
> with fe168ES-R, Visaton B200 in OB,etc, and pre,
> homebuilt FVP5A (I have others but nothing I have
> sounds as good),Rega 2 TT,  NAD cd and old Pioneer
> tuner.
> Power Amps are AKSA 55W with my own slight mods, IGC
> with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
> mode", PP KT88, Transcendent SE OTL, SE IT 2A3 etc.
> Most of my equipment I have built myself.
>
> I cannot find a fault with the sound of Charlize. The
> only strange thing I found was at first it sounded a
> bit bass heavy around 60 - 80HZ, never measured it but
> I no longer notice it so it went away.None of my
> speakers have crossovers but I have a pair of
> Scanspeak monitors (Kevlar / Revelator) that I could
> try it with although they need some power to get
> going.
>
> I had a Fisher 202c but it became a donor for its
> OPT's. The 300B
> I am not a fan of, or the ones I heard anyway.
> Another amp that I think is wonderful is the
> Transcendent SE OTL.
> Have you tried the Charlize? You only mentioned the
> Teac.
>
> Andrew
>
> --- Janina Klamecki <klamfil@...> wrote:
>
> > Hi guys
> > What speakers are you using? My experience with
> > modded Teac ( hovland
> > coupling caps  and connectors ) are not that great.
> > Neither with OB
> > design with altec 420 alnico nor with horns (fostex
> > 208 in front
> > traxtrix + jensen  alnico tweeter ) this amp sounded
> > particularly
> > interesting .I liked old Fisher 500c receiver better
> > and my 300B
> > (flesh& blood) is a totally different league. I
> > drive with TEac
> > Klipshorn bass horn for mentioned MF HF units and it
> > sort of sucks too.
> > Regards, Wojtek
> > On Friday, November 25, 2005, at 02:31 PM, Andrew
> > Brandon wrote:
> >
> > > Hello Andy,
> > >
> > > Welcome to the club. I got a Charlize ~ 6 weeks
> > ago
> > > and have had to rethink my thinking.
> > > Saying the Charlize is good would be a
> > understatment,
> > > it is very good. I am still amazed at how it
> > sounds
> > > and its so small. Anyone who does not think
> > anything
> > > so cheap and small cannot sound good should give
> > it a
> > > try. The only thing I miss with the tubes is the
> > > building part, I love to machine metal and solder
> > etc,
> > > now it is unnecessary to go through all that work.
> > > I use a tube preamp in front of mine.
> > >
> > > Andrew
> > >
> > > --- andy2667 <andy2667@...> wrote:
> > >
> > > > Hello DocJohn & Others,
> > > >
> > > > It seems that this forum is not as active as
> > years
> > > > ago. My discussion
> > > > on Class-T may a little bit ouside Topic.Just
> > want
> > > > to share my
> > > > experience in Class-T amp.
> > > >
> > > > I learnt a lot on tube audio from this forum,
> > > > started in tube gears
> > > > and settled down on tube amp searching sice
> > > > completion of my DRD 300B
> > > > from the Welborne Kit. Intended to explore more
> > on
> > > > other SET tube amps.
> > > >
> > > > My recent experience in class T am changed my
> > mind.
> > > > I acquired a very
> > > > little class-T amp (a complete module need add
> > on
> > > > PSU and connectors)
> > > > from diyparadise. Tried it and has been amazed.
> > > > After a period of
> > > > listening, my beloved DRD 300B may need to
> > retire.
> > > > Not saying that the
> > > > Class-T amp sound better than the DRD300B. They
> > > > sound different but
> > > > both sound good to the same level. How amazing
> > for
> > > > this little class-T
> > > > amp. It cost less than the pair of EH300B tubes.
> > It
> > > > is still in a
> > > > small glimsy plastic box shipped with the amp
> > > > module.
> > > >
> > > > What I need to power up the amp was to solder
> > the
> > > > necessary
> > > > connector....RCA, Binding posts etc and connect
> > the
> > > > amp to a SMPS
> > > > (switched mode Power Supply cost HK$1XX).
> > > >
> > > > The class-T amp is so efficient that it can be
> > > > powered by 12V SLA
> > > > battery. I think my journey to Tube AMP will
> > stop
> > > > here temporary. The
> > > > class-T is so compact, small, efficient ,
> > flexible.
> > > > It sound excellent
> > > > too!
> > > >
> > > > No exotic Power cable, no PSU treatment!
> > > >
> > > > In my opinion, a new era in Hi-Fi audio will
> > comes.
> > > > Hi-Fi Pc, good
> > > > class D, battery or SMPS powered gears.......
> > > >
> > > > By the way, battery powered NOS DAC sound very
> > > > smooth and good. Not
> > > > much experience in DAC. Has only used some
> > cheapy
> > > > CDP and old Philips
> > > > CD880.
> > > >
> > > > I amp now using Class -T main amp, PC + hard
> > disC +
> > > > battery powered
> > > > USB sound Card as main source, battery powered
> > NOS
> > > > DAC. The PC is so
> > > > convenient that I will cease investigating LP as
> > > > source.
> > > >
> > > > Hope my experience can provide some insights.
> > > >
> > > > Andy
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > Est autem fides credere quod nondum vides; cuius
> > fidei merces est
> > > videre quod credis
> > >
> > >
> > >           
> > > __________________________________
> > > Yahoo! Music Unlimited
> > > Access over 1 million songs. Try it free.
> > > http://music.yahoo.com/unlimited/
> > >
> > <image.tiff>
> > >
> > > YAHOO! GROUPS LINKS
> > >
> > > +      Visit your group "doctorjohn_CheapTubeAudio" on
> > the web.
> > > 
> > > +      To unsubscribe from this group, send an email
> > to:
> > >
> >
> doctorjohn_CheapTubeAudio-unsubscribe@yahoogroups.com
> > > 
> > > +      Your use of Yahoo! Groups is subject to the
> > Yahoo! Terms of Service.
> > >
> > >
> > <image.tiff>
> > >
> >
>
>
> Est autem fides credere quod nondum vides; cuius fidei merces est
> videre quod credis
>
>
>            
> __________________________________
> Yahoo! Music Unlimited
> Access over 1 million songs. Try it free.
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>
> SPONSORED LINKS
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> +  To unsubscribe from this group, send an email to:
>  doctorjohn_CheapTubeAudio-unsubscribe@yahoogroups.com
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> +  Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
>
>
<image.tiff>
>

I use 208 Sigmas' (the original, not the EZ or
whatever the newer one is called) in Jerico horns, and
have others such as Swan D101a with FE108EZ, Swan D168
with fe168ES-R, Visaton B200 in OB,etc, and pre,
homebuilt FVP5A (I have others but nothing I have
sounds as good),Rega 2 TT,  NAD cd and old Pioneer
tuner.
Power Amps are AKSA 55W with my own slight mods, IGC
with 3875, PP EL34, PP300B, PP2A3, SE 807 in "RH
mode", PP KT88, Transcendent SE OTL, SE IT 2A3 etc.
Most of my equipment I have built myself.

I cannot find a fault with the sound of Charlize. The
only strange thing I found was at first it sounded a
bit bass heavy around 60 - 80HZ, never measured it but
I no longer notice it so it went away.None of my
speakers have crossovers but I have a pair of
Scanspeak monitors (Kevlar / Revelator) that I could
try it with although they need some power to get
going.

I had a Fisher 202c but it became a donor for its
OPT's. The 300B
I am not a fan of, or the ones I heard anyway.
Another amp that I think is wonderful is the
Transcendent SE OTL.
Have you tried the Charlize? You only mentioned the
Teac.

Andrew

--- Janina Klamecki <klamfil@...> wrote:

> Hi guys
> What speakers are you using? My experience with
> modded Teac ( hovland
> coupling caps  and connectors ) are not that great.
> Neither with OB
> design with altec 420 alnico nor with horns (fostex
> 208 in front
> traxtrix + jensen  alnico tweeter ) this amp sounded
> particularly
> interesting .I liked old Fisher 500c receiver better
> and my 300B
> (flesh& blood) is a totally different league. I
> drive with TEac
> Klipshorn bass horn for mentioned MF HF units and it
> sort of sucks too.
> Regards, Wojtek
> On Friday, November 25, 2005, at 02:31 PM, Andrew
> Brandon wrote:
>
> > Hello Andy,
> >
> > Welcome to the club. I got a Charlize ~ 6 weeks
> ago
> > and have had to rethink my thinking.
> > Saying the Charlize is good would be a
> understatment,
> > it is very good. I am still amazed at how it
> sounds
> > and its so small. Anyone who does not think
> anything
> > so cheap and small cannot sound good should give
> it a
> > try. The only thing I miss with the tubes is the
> > building part, I love to machine metal and solder
> etc,
> > now it is unnecessary to go through all that work.
> > I use a tube preamp in front of mine.
> >
> > Andrew
> >
> > --- andy2667 <andy2667@...> wrote:
> >
> > > Hello DocJohn & Others,
> > >
> > > It seems that this forum is not as active as
> years
> > > ago. My discussion
> > > on Class-T may a little bit ouside Topic.Just
> want
> > > to share my
> > > experience in Class-T amp.
> > >
> > > I learnt a lot on tube audio from this forum,
> > > started in tube gears
> > > and settled down on tube amp searching sice
> > > completion of my DRD 300B
> > > from the Welborne Kit. Intended to explore more
> on
> > > other SET tube amps.
> > >
> > > My recent experience in class T am changed my
> mind.
> > > I acquired a very
> > > little class-T amp (a complete module need add
> on
> > > PSU and connectors)
> > > from diyparadise. Tried it and has been amazed.
> > > After a period of
> > > listening, my beloved DRD 300B may need to
> retire.
> > > Not saying that the
> > > Class-T amp sound better than the DRD300B. They
> > > sound different but
> > > both sound good to the same level. How amazing
> for
> > > this little class-T
> > > amp. It cost less than the pair of EH300B tubes.
> It
> > > is still in a
> > > small glimsy plastic box shipped with the amp
> > > module.
> > >
> > > What I need to power up the amp was to solder
> the
> > > necessary
> > > connector....RCA, Binding posts etc and connect
> the
> > > amp to a SMPS
> > > (switched mode Power Supply cost HK$1XX).
> > >
> > > The class-T amp is so efficient that it can be
> > > powered by 12V SLA
> > > battery. I think my journey to Tube AMP will
> stop
> > > here temporary. The
> > > class-T is so compact, small, efficient ,
> flexible.
> > > It sound excellent
> > > too!
> > >
> > > No exotic Power cable, no PSU treatment!
> > >
> > > In my opinion, a new era in Hi-Fi audio will
> comes.
> > > Hi-Fi Pc, good
> > > class D, battery or SMPS powered gears.......
> > >
> > > By the way, battery powered NOS DAC sound very
> > > smooth and good. Not
> > > much experience in DAC. Has only used some
> cheapy
> > > CDP and old Philips
> > > CD880.
> > >
> > > I amp now using Class -T main amp, PC + hard
> disC +
> > > battery powered
> > > USB sound Card as main source, battery powered
> NOS
> > > DAC. The PC is so
> > > convenient that I will cease investigating LP as
> > > source.
> > >
> > > Hope my experience can provide some insights.
> > >
> > > Andy
> > >
> > >
> > >
> > >
> > >
> >
> >
> > Est autem fides credere quod nondum vides; cuius
> fidei merces est
> > videre quod credis
> >
> >
> >
> > __________________________________
> > Yahoo! Music Unlimited
> > Access over 1 million songs. Try it free.
> > http://music.yahoo.com/unlimited/
> >
> <image.tiff>
> >
> > YAHOO! GROUPS LINKS
> >
> > +  Visit your group "doctorjohn_CheapTubeAudio" on
> the web.
> >
> > +  To unsubscribe from this group, send an email
> to:
> >
>
doctorjohn_CheapTubeAudio-unsubscribe@yahoogroups.com
> >
> > +  Your use of Yahoo! Groups is subject to the
> Yahoo! Terms of Service.
> >
> >
> <image.tiff>
> >
>


Est autem fides credere quod nondum vides; cuius fidei merces est videre quod
credis



__________________________________
Yahoo! Music Unlimited
Access over 1 million songs. Try it free.
http://music.yahoo.com/unlimited/

Hi guys
What speakers are you using? My experience with modded Teac ( hovland
coupling caps  and connectors ) are not that great. Neither with OB
design with altec 420 alnico nor with horns (fostex 208 in front
traxtrix + jensen  alnico tweeter ) this amp sounded particularly
interesting .I liked old Fisher 500c receiver better and my 300B
(flesh& blood) is a totally different league. I drive with TEac
Klipshorn bass horn for mentioned MF HF units and it sort of sucks too.
Regards, Wojtek
On Friday, November 25, 2005, at 02:31 PM, Andrew Brandon wrote:

> Hello Andy,
>
> Welcome to the club. I got a Charlize ~ 6 weeks ago
> and have had to rethink my thinking.
> Saying the Charlize is good would be a understatment,
> it is very good. I am still amazed at how it sounds
> and its so small. Anyone who does not think anything
> so cheap and small cannot sound good should give it a
> try. The only thing I miss with the tubes is the
> building part, I love to machine metal and solder etc,
> now it is unnecessary to go through all that work.
> I use a tube preamp in front of mine.
>
> Andrew
>
> --- andy2667 <andy2667@...> wrote:
>
> > Hello DocJohn & Others,
> >
> > It seems that this forum is not as active as years
> > ago. My discussion
> > on Class-T may a little bit ouside Topic.Just want
> > to share my
> > experience in Class-T amp.
> >
> > I learnt a lot on tube audio from this forum,
> > started in tube gears
> > and settled down on tube amp searching sice
> > completion of my DRD 300B
> > from the Welborne Kit. Intended to explore more on
> > other SET tube amps.
> >
> > My recent experience in class T am changed my mind.
> > I acquired a very
> > little class-T amp (a complete module need add on
> > PSU and connectors)
> > from diyparadise. Tried it and has been amazed.
> > After a period of
> > listening, my beloved DRD 300B may need to retire.
> > Not saying that the
> > Class-T amp sound better than the DRD300B. They
> > sound different but
> > both sound good to the same level. How amazing for
> > this little class-T
> > amp. It cost less than the pair of EH300B tubes. It
> > is still in a
> > small glimsy plastic box shipped with the amp
> > module.
> >
> > What I need to power up the amp was to solder the
> > necessary
> > connector....RCA, Binding posts etc and connect the
> > amp to a SMPS
> > (switched mode Power Supply cost HK$1XX).
> >
> > The class-T amp is so efficient that it can be
> > powered by 12V SLA
> > battery. I think my journey to Tube AMP will stop
> > here temporary. The
> > class-T is so compact, small, efficient , flexible.
> > It sound excellent
> > too!
> >
> > No exotic Power cable, no PSU treatment!
> >
> > In my opinion, a new era in Hi-Fi audio will comes.
> > Hi-Fi Pc, good
> > class D, battery or SMPS powered gears.......
> >
> > By the way, battery powered NOS DAC sound very
> > smooth and good. Not
> > much experience in DAC. Has only used some cheapy
> > CDP and old Philips
> > CD880.
> >
> > I amp now using Class -T main amp, PC + hard disC +
> > battery powered
> > USB sound Card as main source, battery powered NOS
> > DAC. The PC is so
> > convenient that I will cease investigating LP as
> > source.
> >
> > Hope my experience can provide some insights.
> >
> > Andy
> >
> >
> >
> >
> >
>
>
> Est autem fides credere quod nondum vides; cuius fidei merces est
> videre quod credis
>
>
>            
> __________________________________
> Yahoo! Music Unlimited
> Access over 1 million songs. Try it free.
> http://music.yahoo.com/unlimited/
>
<image.tiff>
>
> YAHOO! GROUPS LINKS
>
> +  Visit your group "doctorjohn_CheapTubeAudio" on the web.
>  
> +  To unsubscribe from this group, send an email to:
>  doctorjohn_CheapTubeAudio-unsubscribe@yahoogroups.com
>  
> +  Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
>
>
<image.tiff>
>

Hello Andy,

Welcome to the club. I got a Charlize ~ 6 weeks ago
and have had to rethink my thinking.
Saying the Charlize is good would be a understatment,
it is very good. I am still amazed at how it sounds
and its so small. Anyone who does not think anything
so cheap and small cannot sound good should give it a
try. The only thing I miss with the tubes is the
building part, I love to machine metal and solder etc,
now it is unnecessary to go through all that work.
I use a tube preamp in front of mine.

Andrew

--- andy2667 <andy2667@...> wrote:

> Hello DocJohn & Others,
>
> It seems that this forum is not as active as years
> ago. My discussion
> on Class-T may a little bit ouside Topic.Just want
> to share my
> experience in Class-T amp.
>
> I learnt a lot on tube audio from this forum,
> started in tube gears
> and settled down on tube amp searching sice
> completion of my DRD 300B
> from the Welborne Kit. Intended to explore more on
> other SET tube amps.
>
> My recent experience in class T am changed my mind.
> I acquired a very
> little class-T amp (a complete module need add on
> PSU and connectors)
> from diyparadise. Tried it and has been amazed.
> After a period of
> listening, my beloved DRD 300B may need to retire.
> Not saying that the
> Class-T amp sound better than the DRD300B. They
> sound different but
> both sound good to the same level. How amazing for
> this little class-T
> amp. It cost less than the pair of EH300B tubes. It
> is still in a
> small glimsy plastic box shipped with the amp
> module.
>
> What I need to power up the amp was to solder the
> necessary
> connector....RCA, Binding posts etc and connect the
> amp to a SMPS
> (switched mode Power Supply cost HK$1XX).
>
> The class-T amp is so efficient that it can be
> powered by 12V SLA
> battery. I think my journey to Tube AMP will stop
> here temporary. The
> class-T is so compact, small, efficient , flexible.
> It sound excellent
> too!
>
> No exotic Power cable, no PSU treatment!
>
> In my opinion, a new era in Hi-Fi audio will comes.
> Hi-Fi Pc, good
> class D, battery or SMPS powered gears.......
>
> By the way, battery powered NOS DAC sound very
> smooth and good. Not
> much experience in DAC. Has only used some cheapy
> CDP and old Philips
> CD880.
>
> I amp now using Class -T main amp, PC + hard disC +
> battery powered
> USB sound Card as main source, battery powered NOS
> DAC. The PC is so
> convenient that I will cease investigating LP as
> source.
>
> Hope my experience can provide some insights.
>
> Andy
>
>
>
>
>


Est autem fides credere quod nondum vides; cuius fidei merces est videre quod
credis



__________________________________
Yahoo! Music Unlimited
Access over 1 million songs. Try it free.
http://music.yahoo.com/unlimited/

hi Andy,

Well the world will progress and no doubt one day all the source will be
digital, including the amp as well. I am watching the release of those 1
chip amp from Ti etc and soon there will be a few with very good sound.
For now I am busy trying to build better sound tube amps and will soon start
to explore if simple transistor amps could sound good too.

How is the comparison between your class T and tube sound? did you use other
amp then 300B as I found that 300B amp usually have difficulty to sound
good?

tks and best rgds

William Lee


----- Original Message -----
From: "andy2667" <andy2667@...>
To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
Sent: Saturday, November 26, 2005 12:51 AM
Subject: [doctorjohn_CheapTubeAudio] Class T amp


> Hello DocJohn & Others,
>
> It seems that this forum is not as active as years ago. My discussion
> on Class-T may a little bit ouside Topic.Just want to share my
> experience in Class-T amp.
>
> I learnt a lot on tube audio from this forum, started in tube gears
> and settled down on tube amp searching sice completion of my DRD 300B
> from the Welborne Kit. Intended to explore more on other SET tube amps.
>
> My recent experience in class T am changed my mind. I acquired a very
> little class-T amp (a complete module need add on PSU and connectors)
> from diyparadise. Tried it and has been amazed. After a period of
> listening, my beloved DRD 300B may need to retire. Not saying that the
> Class-T amp sound better than the DRD300B. They sound different but
> both sound good to the same level. How amazing for this little class-T
> amp. It cost less than the pair of EH300B tubes. It is still in a
> small glimsy plastic box shipped with the amp module.
>
> What I need to power up the amp was to solder the necessary
> connector....RCA, Binding posts etc and connect the amp to a SMPS
> (switched mode Power Supply cost HK$1XX).
>
> The class-T amp is so efficient that it can be powered by 12V SLA
> battery. I think my journey to Tube AMP will stop here temporary. The
> class-T is so compact, small, efficient , flexible. It sound excellent
> too!
>
> No exotic Power cable, no PSU treatment!
>
> In my opinion, a new era in Hi-Fi audio will comes. Hi-Fi Pc, good
> class D, battery or SMPS powered gears.......
>
> By the way, battery powered NOS DAC sound very smooth and good. Not
> much experience in DAC. Has only used some cheapy CDP and old Philips
> CD880.
>
> I amp now using Class -T main amp, PC + hard disC + battery powered
> USB sound Card as main source, battery powered NOS DAC. The PC is so
> convenient that I will cease investigating LP as source.
>
> Hope my experience can provide some insights.
>
> Andy
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Hello DocJohn & Others,

It seems that this forum is not as active as years ago. My discussion
on Class-T may a little bit ouside Topic.Just want to share my
experience in Class-T amp.

I learnt a lot on tube audio from this forum, started in tube gears
and settled down on tube amp searching sice completion of my DRD 300B
from the Welborne Kit. Intended to explore more on other SET tube amps.

My recent experience in class T am changed my mind. I acquired a very
little class-T amp (a complete module need add on PSU and connectors)
from diyparadise. Tried it and has been amazed. After a period of
listening, my beloved DRD 300B may need to retire. Not saying that the
Class-T amp sound better than the DRD300B. They sound different but
both sound good to the same level. How amazing for this little class-T
amp. It cost less than the pair of EH300B tubes. It is still in a
small glimsy plastic box shipped with the amp module.

What I need to power up the amp was to solder the necessary
connector....RCA, Binding posts etc and connect the amp to a SMPS
(switched mode Power Supply cost HK$1XX).

The class-T amp is so efficient that it can be powered by 12V SLA
battery. I think my journey to Tube AMP will stop here temporary. The
class-T is so compact, small, efficient , flexible. It sound excellent
too!

No exotic Power cable, no PSU treatment!

In my opinion, a new era in Hi-Fi audio will comes. Hi-Fi Pc, good
class D, battery or SMPS powered gears.......

By the way, battery powered NOS DAC sound very smooth and good. Not
much experience in DAC. Has only used some cheapy CDP and old Philips
CD880.

I amp now using Class -T main amp, PC + hard disC + battery powered
USB sound Card as main source, battery powered NOS DAC. The PC is so
convenient that I will cease investigating LP as source.

Hope my experience can provide some insights.

Andy

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, "bhootnut"
<bhootnut@y...> wrote:
>
> Hi Friends,
>
> Does anybody can explain difference in these models and how do they
> sound..I've heard that 8b is much better.
>
> Rgds,
>              Andrey.
>


Same circuit, differant transformers.  The 8b has better transformers.

Best,

Ross

Is anyone familiar with this preamp ?

I recently aquired one (along with a KN-1515 6bq5 stereo amp) and I am
curious as to the general opinion.  Does anyone have a schematic ?

Tube lineup is 4 x 12ax7 and 1 x 12au7.  No sign of a rectifier tube,
so I suspect ss rectification.

It has a gold/brass face like an Eico or Pas-2, with a red light at top
dead center.

Seperate volume controls for each channel along with a master gain
control.  Seperate rumble, scratch, stereo/mono, loudness switches
along the bottom edge.

Source choices are auz/tape/tuner/Eur/ffrr/RIAA/tape-re/mic.

Thanks !

Ross

Hi Friends,

Does anybody can explain difference in these models and how do they
sound..I've heard that 8b is much better.

Rgds,
              Andrey.

PLEASE REMOVE ME FROM YOUR MAILING LIST

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the doctorjohn_CheapTubeAudio
group.

   File        : /CIRCUITS & PICS - Members/Alans SE PSU.gif
   Uploaded by : alan_slaughter2000 <alan_slaughter2000@...>
   Description : Note the dual voltage switch

You can access this file at the URL:
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ICS%20-%20Members/Alans%20SE%20PSU.gif

To learn more about file sharing for your group, please visit:
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Regards,

alan_slaughter2000 <alan_slaughter2000@...>

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the doctorjohn_CheapTubeAudio
group.

   File        : /CIRCUITS & PICS - Members/alans 300B SE final cct.gif
   Uploaded by : alan_slaughter2000 <alan_slaughter2000@...>
   Description : My pride and joy sorry about the  NFB option but I use LS3/5As

You can access this file at the URL:
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ICS%20-%20Members/alans%20300B%20SE%20final%20cct.gif

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/help/us/groups/files

Regards,

alan_slaughter2000 <alan_slaughter2000@...>

Thanks John for the recommendation.

Dear fellow members please feel free to browse and join in the chat.
That (the Gain Clone) was the Waterloo for Tanuski!

__________________






--- In doctorjohn_CheapTubeAudio@yahoogroups.com, "doclowther"
<doclowther@y...> wrote:
> Forgot to mention Tanuski, Gary B and Keith are our members in New
> York/NJ. Get the beautiful Brooklyn pic. ws is member in HOng Kong.

Forgot to mention Tanuski, Gary B and Keith are our members in New
York/NJ. Get the beautiful Brooklyn pic. ws is member in HOng Kong.

--- In doctorjohn_CheapTubeAudio@yahoogroups.com, "doclowther"
<doclowther@y...> wrote:
> For great pics, schematics and discussions on 310A/300B amp vs ECC82
> SRPP/300B amp vs Gainclone etc go to:
>
> http://www.review33.com/avforum/forum_message.php?topic=
91050610223749
>
> There'll be a lot more to come I think. Keep watch on this thread.

For great pics, schematics and discussions on 310A/300B amp vs ECC82
SRPP/300B amp vs Gainclone etc go to:

http://www.review33.com/avforum/forum_message.php?topic=91050610223749

There'll be a lot more to come I think. Keep watch on this thread.

Hi,

> also the proper biasing of the pre-amp
> stage really req lots of trial and error!

You can considerably reduce this by doing some homework first.

To illustrate, let us take a 300B output Valve at 350V/60mA/5K load
which will give around 6...7 Watt @ 3% 2nd harmonic distortion (& <
1% 3hd and very little higher order). Bias is 74V nominal, this
means in order to get the nominal power we need to swing lineary at
least +/-74V.

It suggests first and foremost an anode voltage for the driver of at
least twice, preferably trice the bias Voltage, so 150 - 220V Anode
voltage seem called for. A suitable driver would be the WE 437A,
which has a Mu (or gain) of 43 according to the datasheet, lets call
40 to make it easy to calculate and the Bias we call 80V, having a
little reserve will make sure we have some room to tune things a
little later on.

So, we want to be able to move the anode of our 417A driver valve by
at least 80V, this means our grid needs to move by 2V as the gain is
only 40. That only holds for a driver valve loaded by a current
source, transformer or choke, with a resistor as load the gain is
lower and thus the anode swing.

From the above we know that the bias of our driver valve MUST be at
the very least 2V to avoid driving the grid positive, but that gives
no headroom at all, so ideally we want more than 2V bias and an
anode voltage of around (say) 200V. Lastly, we want as much as
possible to stay away from the region of operation of the driver
valve where the gridvoltage lines in the diagram become overly
curved.

Let's look at the anode curves in the 437A datasheet. For 200V and
10mA we find that our Bias is 4V. With a nearly horizontal load line
(current source or high primary inductance interstag transformer or
indeed a choke) we find the gridlines quite evenly spaced suggesting
low distortion of the driver stage. Moreover, we can apply a lot of
input overload before the driverstage actually clips by itself,
making sure the amplifier will gracefully recover from overload.

Now what if we had used the datasheet listed operation at 160V +B
and 36mA, as I have seen more than once? We find that we just barely
have enough bias to actually carry the signal we beed.

But there is something worse. If you actually measure the spectrum
of our 437A you find that at 160V/36mA there is a lot more of
distortion with upper harmonics then relatively at the low current
operating condition, even though the high current opertaion seems to
work just about okay in our application as well. This means
literally more current = more edgy sound.

The other side benefits of running the 437A (and iothers like it
such as 417A, 6S45, trioded E180F/6688/6Z9 et al) is a longer
lifespan and better long term constance of parameters, especially if
combined with undervoltage heating (at the datasheets lower
tolerance boundary).

Anyway with the steps above you can make at least sure things get in
the ballpark.

> All output stage like to see higher load.

True pentodes actually are the opposite, but Trioded
Pentodes/Tetrodes or Ultralinear circuitry indeed works on the same
principle of higher load witin reason = better sound.

Ciao T

Tks for the insight Ton silver Mica, also the proper biasing of the pre-amp
stage really req lots of trial and error!

All output stage like to see higher load.
Recently I found that 6550/KT88 always sounded better in the EL34/6L6GC
circuitry, could it be that 6550 type has a lower output impedance?

tks again and best regards

William Lee

----- Original Message -----
From: "Thorsten Loesch" <Thorsten.Loesch@...>
To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
Sent: Thursday, July 07, 2005 4:18 PM
Subject: RE: [doctorjohn_CheapTubeAudio] sound of Silver Mica and adjustable
self bias


> Hi,
>
>> How is the sound of the bigger Silver Mica caps in comparison to
>> plastic and Teflon?
>
> Most Teflon capacitors I can get have magnetic steel shells and are easy
> to
> pick out in comparisons for a rather edgy, grainy sound which many mistake
> for "great detail". I suspect PTFE Capacitors without shell would be
> better,
> but I have not had the chance to try them.
>
> Silver Mica capacitors are completely free from the slight quackiness that
> seems the attribute of many film capacitors.
>
>> So far you are the few who said some what lower bias lead to better
>> sound.
>
> I am recommending lower in certain places, not all. I find the higher the
> transconductance of a triode the more ragged the harmonic distortion
> becomes
> and the less plesant the sound. Plus, especially with 417A style valves
> you
> often have not got enough bias to get the anode swing into usable regions
> with less bias and thus more current.
>
> I find above average load impedance (which loose some "on the paper"
> power)
> and less anode current often gives a sound that has more clarity without
> becoming bright or edgy.
>
> Ciao T
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Hi,

> How is the sound of the bigger Silver Mica caps in comparison to
> plastic and Teflon?

Most Teflon capacitors I can get have magnetic steel shells and are easy to
pick out in comparisons for a rather edgy, grainy sound which many mistake
for "great detail". I suspect PTFE Capacitors without shell would be better,
but I have not had the chance to try them.

Silver Mica capacitors are completely free from the slight quackiness that
seems the attribute of many film capacitors.

> So far you are the few who said some what lower bias lead to better sound.

I am recommending lower in certain places, not all. I find the higher the
transconductance of a triode the more ragged the harmonic distortion becomes
and the less plesant the sound. Plus, especially with 417A style valves you
often have not got enough bias to get the anode swing into usable regions
with less bias and thus more current.

I find above average load impedance (which loose some "on the paper" power)
and less anode current often gives a sound that has more clarity without
becoming bright or edgy.

Ciao T

hi T,

How is the sound of the bigger Silver Mica caps in comparison to plastic and
Teflon?
I got the big brown Russian 0.1UF 300V type, as well as the 0.01 350V
Russian sq green cover in between of 2 metal end.
So far you are the few who said some what lower bias lead to better sound.
This is esp true in the case of fixed bias. I am trying the self bias,
perhaps the bias needed will be slightly higher then their fixed bias
equivalent. Yesterday I have an idea to make a self bias amp adjustable. I
will parallel perhaps 10-20K potential meter to the self bias resistor. The
moving arm will be connected to the ground end of grid resistor. Then the
grid voltage can be adj for some positive voltage that will reduce the idle
current....
Of course by-pass caps need to be used liberally.

tks and best rgds

William Lee


Tks and bets rgds

William Lee

----- Original Message -----
From: "Thorsten Loesch" <Thorsten.Loesch@...>
To: <doctorjohn_CheapTubeAudio@yahoogroups.com>
Sent: Thursday, July 07, 2005 9:49 AM
Subject: RE: [doctorjohn_CheapTubeAudio] Re: To Mr. T - how to do fixed
bias?


> Hi,
>
>> Thanks, now I am all set. I will visit Brian and get kitted out.
>
> While there, see if you can get a pair of his silver/mica 0.1uF
> Capacitors.
> Connect from 417A Anode to 300B grid, effectively bridging the interstage
> transformer for high frequencies.
>
> Ciao T
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Hi,

> Thanks, now I am all set. I will visit Brian and get kitted out.

While there, see if you can get a pair of his silver/mica 0.1uF Capacitors.
Connect from 417A Anode to 300B grid, effectively bridging the interstage
transformer for high frequencies.

Ciao T