Thank you for answering already! I think I'll go with the Xonar DG, because my video card air flow would be obstructed by the DGX. Is the DGX so far superior? 

Hello everyone. I'm looking for an Headphone + Sound Card combo for about 100$, do you know any? I'm going to use it mostly for gaming, but I do like some rock n roll sometimes... hehehe  I thought about the Audio Technica ATH-M30 (42$) and the Asus Xonar DS 7.1 (43$) and saving the rest for a...