I use the Sony CDP-555ES 300-disc (now 400) changers as transports into my DAC (actually the Lexicon MC-12). I'm very satisfied with the performance, though I'm sure I'm not getting the last ounce of performance. I have a single-CD transport for when I'm "serious", but I just love being able to put on the random play with a wide variety of music in the changer - it's like having my own commercial-free radio station. I've got three of the changers so it's a long time before the "playlist" starts repeating itself. I make copies of each CD so I don't lose access to the original for playing when I'm "serious" or in my car changer, as well as to guard against wear of being mechanically handled by the changer. In any case, I think the Sony ES changers are the way to go. -Kirk