what speakers are you using?it can depend a lot on which speakers you are using, i personally turn off equalizer settings; enable dolby prologin IIx ; 6channel ; 7.1speaker modekeith_j_snyder2 said:WOW! hey man u got an awesome timing! I waited for an entire week to see if someone sells a Xonar DX & just yesterday evening i bought a brand new one!!!
Anyways i don't see much of a performance difference with the card attached may be because of the my noobish knowledge in sound so help me up with the settings. And good luck for ur sale.
also you need to have high quality audio/video files to really notice the difference; and have you tried gaming? in options menu set sound to dolby digital and not to default 3dsound.