the gda-600 is ok for an entry level dac. i use the adcom gda-700 in my den setup. the 700 is another couple levels up from the 600. as for any 16 or 20 bit older dacs, i think a lot of them are better than some of the current 24/96 dacs. last time i purchased a dac, i listened to quite a few newer dacs and i ended up buying the audio research dac2 and a manley dac. i know somebody selling a 700 if interested.
