I do not understand why so many people say, the sound card is not compatible with devil speakers. I have been doing a couple of days with my Teufel Concept E 400 system and everything works fine. The subwoofer is right extreme and all other speakers are going well (Unwandlung stereo signal in 5.1 will also work very well. This is my 3 external sound card (before it was the Terratec and Trust) and is the first one to work properly. It must in the Creative Audio Control Panel THX TruStudio just click "activate Speaker".