HI guys, I am proud owner of opus#2 for 1 month now and i've really enjoyed the improvements with my current headphones (fostex tr80) but i would really like to invest in some high end open headphones that could be driven directly from opus#2 using a balanced cable. I tried a lot of IEMs as @SilverEars suggested you get the best out of a DAP using IEMs but i really couldn't enjoy the improvements of 700$+ IEMs compared to my current setup. I tried earsonics SEM9 and senn IE800 and IE800s (which i returned recently) ; i couldn't get my hands on stuff like campfire audio or other brands but i doubt the sound will fit me. So i'm a bit abandonning the idea of having high end IEMs for when i'm outside and i'd rather invest in some good open headphones for home. I tried the HD800 with a 6.5mm-->3.5mm adaptater directly into my opus#2 and enjoyed the details, the space and seperation of instruments. Do you guys have any ideas of headphones i should try ?