I have the Xonar DG and i believe it can handle up to 150 ohms. From all the reading I have done on the forum (Mainly Mad Lust Envy), I am really leaning towards the DT990 Premium 600, but I don't think my Xonar DG can drive it properly. I currently have the M-50s and I can agree with everyone that the sound stage and sound for gaming is terrible, however music is very nice.
I play competitive Quake Live & some Team Fortress 2, and I play single player rpgs etc. I really do not want to invest in a new sound card or an expensive amp. I know the PC360s are very good for competitive gaming, but will they sound good for music and general gaming as well? From what I've read the DT900s are very immersive for single player. I do communicate on ventrilo & Mumble quite frequently, but I am not opposed to a clip on or desk mic. I just want all around nice sound through all forms of audio, gaming, music and movies. Would the 32 ohm version of dt990 disappoint? or maybe the cheaper pro dt990?