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Modifying the "ART DI/O" as a tube head amp   Message List  
Reply | Forward Message #2886 of 3275 |

I've posted an idea over at www.head- fi.org about the possibility of
reconfiguring the ADC section as a headphone amp:

http://www6.head-fi.org/forums/showthread.php?t=110099

The "gain" knobs and "warmth" knobs could be all functional. The details of how
it would be done without affecting the DAC section have to be worked out but
should be fairly straight forward. I just wanted to see if their was any
interest from this DIOmod community in having this capability. I set up a poll
below:

http://groups.yahoo.com/group/DIOmods/surveys?id=11990344


PeAK
Mon Mar 7, 2005 2:38 pm

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peakrchau
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Forward 		Message #2886 of 3275 |
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I've posted an idea over at www.head- fi.org about the possibility of reconfiguring the ADC section as a headphone amp: ... 		PeAK
peakrchau
Offline Send Email 		Mar 7, 2005
2:43 pm

Cool idea. It will have a short signal path and a tube stage, right? All the best, Jim From: PeAK [mailto:peakrchau@...] I've posted an idea over at...
Lama, Jim L'Hommedieu
jlamadoo
Offline Send Email 		Mar 8, 2005
1:26 am

Jim, Sorry about the late response. The tube stage is not the final one but an intermediate stage. The final output sums up two different paths (one solid...
PeAK
peakrchau
Offline Send Email 		Mar 11, 2005
9:18 pm

... From: "PeAK" <peakrchau@...> To: <DIOmods@yahoogroups.com> Sent: Monday, March 07, 2005 9:38 AM Subject: [DIOmods] Modifying the "ART DI/O" as a tube...
Hugo Z. Hackenbush
hirsch_d
Offline Send Email 		Mar 9, 2005
4:41 am

Hirsch Your notes about the volume control not being very useful probably means that the gain has some minimum fixed gain for the ADC path...sort of makes...
PeAK
peakrchau
Offline Send Email 		Mar 11, 2005
9:33 pm

... As I am using Dio to drive my K240M, I find the output (max level) is barely loud enough. It's OK when listening to pop/rap/rock music, but for classical...
mudi83
Offline Send Email 		Mar 13, 2005
7:29 pm

I now have a first set of mods for the DI/O. For a maximum recorded level on a CD of 0 dBFS the modified circuit will put out a level of about 3.8V (14 dBu)...
PeAK
peakrchau
Offline Send Email 		Mar 14, 2005
1:24 am

Version 2: Cascaded Gain Stages This circuit combines the "Short Gain" stage along with a second stage where the "warmth" pot mixes the tube and solid state...
PeAK
peakrchau
Offline Send Email 		Mar 16, 2005
11:57 am

Hi! Can you post more details about this 2nd cut? Thanks! Mudi ... stage where the "warmth" pot mixes the tube and solid state gain paths. Issues with...
mudi83
Offline Send Email 		Mar 18, 2005
7:54 pm

It would be great if you can post your new finds along with schematics and picture on your website. It would be much easier for everyone. Just a thought! Mudi ...
mudi83
Offline Send Email 		Mar 18, 2005
7:57 pm
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