Also a very good choice for a headset. I have the Beyerdynamic MMX 300 myself and use the Creative Sound BlasterX G6 in front. Even without SW (driver & EQ) installed on the PC, the sound quality is excellent and definitely gives off enough power to drive even the most demanding headphones. So I think your combo would also fit well. With the Creative driver SW installed, you can configure everything to your own taste (surround, EQ, etc.). Have fun.