Tried the HD-650 today for gaming. Definitely not as good as the HD-598 for gaming. I can say that it might be better for movies at least. As long as you're watching an action movie with lots of car chases and explosions! Luckily my HD-650 is not the dark and veiled version. It's actually kind of bright. First difference is that the soundstage on the HD-598 to me feels much larger. The mids and all those tiny details are more forward on the HD-598. Vocals in New Vegas seem a tad more "shouty" on the HD-598 compared to the HD-650. Not really, but very slightly. I shouldn't even call them that.
I felt like that for gaming the HD-650 has too much bass. For music, I didn't feel this way at all EVER. The soundstage of the HD-650 even feels much smaller than my ATH-AD2000 for sure.
I really like the HD-650 for music, but not 100% sure i'll keep it. It does a few things better than my ATH-AD2000 and it's far more comfortable. Kind of reminds me of my DJ100's sound signature. I think it's safe to say I like the NEW HD-650 more than my HD-600 I bought in 2010. HD-650 definitely has the better vocals to me and more detail. Clarity seems to be a lot higher too.
Really not looking forward to comparing my ATH-AD2000 to the HD-650 for music. So annoying and ruins the fun of listening to headphones.
Edited by tdockweiler - 3/1/11 at 4:02pm