I just purchased these, got them in yesterday. They are very impressive sounding, and I am not even using an amp yet. (Building the m3 right now, and waiting on my o2 amp.)
I listen to some quite heavy and technical music, such as Amon Amarth and Rings of Saturn....
I was looking for headphones that had accurate tight bass without muddy sound or added color, but legitimate highs and mids. My ears are quite shot from being an avionics maintainer and not using proper ear protection when working on powered-on aircraft, so take my thoughts with a grain of salt. I can say though, with bad ears, the bass for these headphones are spot on, maybe sometimes not enough.... but the highs and mids are as clean as a mountain river. They're great. They have a lot of room to sound better, and that's why I'm building too different amps.
Edited by VelictAF - 8/14/14 at 1:43am