I read this and I have to add.
I have the hd600 and akg702 both in front of me right now and I am switching back and forth constantly trying to see which musical instramental sounds sound better in which can. I am listening to trance, rock, classical, and ambiant generas. I am a big audiophile and I have to say the akg 702 sound quality is far superior to the hd 600. The akg even handles high valume perfectly while the hd virbrate and start to hurt my ear. The hd has a tiny bit more bass which I like but quality of musical instraments is more important to me than a tiny tiny bit more bass. The hd did have a warmer sound to it. Someone posted saying that the sound on the hd is right close to your ears and the akg sounds farther away but still close. Perfectly described. The hd was far too close. Now I am returning the hd 600 and keeping the akg 702.
But hey, everyones ears are different. Just buy both and find out for yourself, then return one.
Edited by PsychonautPower - 1/24/12 at 3:54am