Computer/DAC combo sugestions

Sorry, I pressed the wrong key ... over straight USB, S/PDIF or Firewire connection. You can build your own computer on the cheap (I have done it for years) and have a totally silent, fanless one dedicated exclusively to audio and thus stripped down (i.e. to just eight or nine services working in Windows, no anti-virus, no internet connection, etc), just like an audio component. This I find fascinating in itself.

Steve, have you compaired the w4S with the ps audio perfect wave updated dac, I would be interested in your thoughts

Vladimir,
I've been reading about Zuma on the Computer Audiophile Site, but little has been said about SQ and what one could expect from such a system. Thus the question.

Kedoades,
Sorry I've never heard Wyred for Sound equipment. From what I've read from other posts, they favor the PWD II. It is a great sounding DAC and with the Bridge a fantastic server.

Sgr, I expect the Zuma to be better sounding than the CAPS 2, the previous CA design because of better isolated USB, cleaner power supply and especially because of battery power. Chris Connaker and others have said that CAPS 2 was better than Mac Mini and even better than the famous and expensive Aurender S10.

Okay get ready...I-Tunes via PC and my DAC WOW. I say WOW!
( DAC WOW (Canadian product) sound slightly better with the new Foobar Beta version, Not worth the album art of I-tunes though...MHO)