Thank you Edesilva & Kennyt. That's very helpful. For my stereo, which is analog ( Adcom power amp, PS Audio pre), and for my budget ( $200 +/-) I think I'm looking at a solution like the Apogee. Then the only question is USB or Firewire & exactly what to get.
By the way, what does PCM stand for?
By the way, what does PCM stand for?