Been reading around doin some research.
Really looking at the HE-400's. I've had my DT990's for a while now though and haven't kept up on research. I've read lots of HD600 comparison threads but what would opinions be in direct comparison to the 990? Also any other similar phones you guys would throw into my mix? HD600, 650, HE400 is what I've got so far. Also looking at some of the woodie Audio Technicas.
Regarding how they sound, the HE-400 is better than the DT-990 in every way IMO (I had the DT-990 Premium at one point). The HE-400 is still a "fun" sounding headphone, but technically it does everything much better, especially the bass is brilliant. The soundstage is smaller though, HE-400 is very small in that department for an open headphone. You could also consider the AKG K712, it's a much more balanced headphone and does many things better than the HE-400. I did a short comparison in my review of the K712.