Dan,
Please don't hate me for asking this, but any ballpark guesses at a price?
I love my current dac, but a NOS 24/192 is not going to be something I can easily overlook, especially considering where it comes from :-).
BTW, a friend has recently had some good results with the audiophillio usb to spdif interfaces under osx and linux with MPD.
-- Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)