i just received mine today and first impressions, it sounds laid back, good channel separation, very detailed and like what others said bass is just ok for me. however, it impressively goes very low unlike my other headphones (i currently own a grado sr80, grado sr 225i, shure 840, pioneer se mj591, atrio m5). im currently using it directly connected to my lenovo windows 8 tablet. i will try it with my fiio e11 headphone amp and ipod touch tomorrow.
They said they modeled this after their ESL speakers but as of now i can't really say it sounds like an ESL. i do have a Martin Logan Vista ESL and it's not as transparent like an electrostat speaker. i think someone compared it to a Grado headphones but for me the Grados have a different sound characteristic and can be fatuiging after long periods but the Mikros 90 i have been listening for 2 hours straight and i feel like it can still go on for 3 more hours.
This thing does clamp on the head so i feel bad for you guys who have huge heads, but the pads are soft though. it does have a pretty good seal that i can hear my heartbeat when there is no music playing :P. No complaints for the $60 price i paid for and Definitely not a 300 headphone IMHO but could the best $60 headphone purchase ever :p
Edited by cscamp - 12/20/13 at 11:48pm