To buy an off-the-shelf PSU have a look at
'Power Supply Units - Commercial Models' in the 'Files' section
New ones are difficult to find. You might find a used one.

But best to make one using a torridal transformer.
'PSU & Cable _ DIY Project' and 'PSU Wiring' in the 'photos' section
and
See 'PSU Wiring tips - PSU Wiring tips for DIY' in the 'Files' section

If you need clarification on anything, please feel free to ask.

--- In M-Audio_SuperDAC_2496@yahoogroups.com, rrojales <rrojales@...>
wrote:
>
> how do i upgrade the PSU ?
>
> On Mar 19, 2008, at 1:53 AM, bluemax_101 wrote:
>
> > The M-Audio SuperDAC 24/96 is no longer available to purchase new.
> > I have seen them come up for sale at internet forums and auction
> > sites.
> > They still are good value for money. Well worth using an uprated
PSU.
> >
> > Then there are many modes you can do. Some very knowledgeable
people
> > here and they have posted details in the Files, Photos and other
> > sections.
> >
> > --- In M-Audio_SuperDAC_2496@yahoogroups.com, "WSJOE" <wsjoe@>
> > wrote:
> > >
> > > Is Superdac 2496 is available for purchase?
> > >
> > > If so, how much and how is the performance for these guys after
a few years since fist came out?
> > >
> > > Where can I purchase this?
> > >
> > > wsjoe