Waldo Pepper;576818 Wrote: 
> Stereo means the buffer amps and DACs run on seperate turns of the
> transformer. Nice on paper but as the whole circuits draw such little
> power - four simple linear regs would do the same off a single turn.
> Nice marketing!
> 
> Power amps however do need separate circuits to achieve total isolation
> and that's questionable.

No that isn't it at all.
The PSU is basically a toroid with 4 seperate 15-0-15 secondaries,
designed to drive up to 4 discrete devices, including DAC's, Headphone
amps, MC head amps etc. Each device comes with a cheap & cheerful
wall-wart style PSU. 
The x-PSU is an optional upgrade that replaces up to 4 wall-warts. I
only use 2 of the outputs.

The AC is rectified/regulated inside the devices. The cooking linear
regs have been replaced by super-regs in my units. 

Using discrete PSU's means that common-mode + ground plane noise is
kept to a minimum.


-- 
Phil Leigh

You want to see the signal path BEFORE it gets onto a CD/vinyl...it
ain't what you'd call minimal...
Touch(wired/XP) - TACT 2.2X (Linear PSU) + Good Vibrations S/W - MF
Triplethreat(Audiocom full mods) - Linn 5103 - Aktiv 5.1 system (6x
LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend
Supertweeters, Blue Jeans Digital,Kimber Speaker & Chord Interconnect
cables
Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything.
------------------------------------------------------------------------
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View this thread: http://forums.slimdevices.com/showthread.php?t=78938

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