That would be the other option (but also the most expensive one) sell the Asus Xonar DX and get an Objective2 with ODAC. Anyway, my main concern is solved. So in the future instead of going for an O2 AMP, I will go for an O2 AMP+ODAC and get rid of the DX. For the moment I'll get the DT770´s.  ...

Hi all, I own a Asus Xonar DX and I'm about to buy the Beyerdynamic DT770 PRO 80ohm, for what I've been reading the sound card supports them (otherwise correct me), but in the future I plan to get an Objective2 Head AMP (the desktop version, I don't intend it to be portable), will be a great...