I have the Asus Crosshair V Formula mobo and I use a Steel Series Siberia full-size headset with USB soundcard.
I have found the audio to be really good when using the USB soundcard and my headset, however I can't help but think that if I was using the integrated audio on my mobo I would be getting better quality audio then I get from the USB soundcard. The mobo has SupremeFX X-Fi 2 built in 8-channel High Def audio.
Can anyone tell me if it is it possible to use these headphone just by plugging them into the front of my case (3.5mm jack) and still get the 7.1 playback that I can get when they are connected to the USB soundcard?