Got me a pair of D7Ks last week on Craigslist for.......$450. Yea, I know. I was shopping for D5Ks and ended up finding these. So far, so nice, but I'm admittedly in way over my head. My source is a Cowon D2, which I've been able to throw some FLAC tunes on. I still haven't figured out how to get the best out of either the Denons or the Cowon but am learning a lot. Currently looking for an amp . . . . but have no idea what to get. Just can't spend what you audiophiles spend on amps at the moment (PhD student with three boys under four years old!). :) Anyway, it's fun to read everyone's thoughts about these cans.