I have the BDT500, and for CD playback, it seems fine. I could hear no noticeable difference in CD's I have known for a long time. Previously I relied on a DVD player as a transport and the DAC in my receiver.
Because I was curious, I recently hooked up a coax digital line from the 500 to my receiver so I can switch back and forth between DACs while playing a CD. I can hear no significant difference in sound quality. Although I cannot say for certain that I hear absolutely no difference at all, I believe that is probably true.
I didn't really expect to hear major differences, I only wanted to make sure that the 500 did not disappoint. It doesn't
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