When I plug in my Turtle Beach Ear Force Stealth 450 Headset it will work and I can configure it to have Stereo and left and right speakers. However during the installation of the X Surround Sound Driver from Turtle Beach's website (URL: www.turtlebeach.com/stealth450) the headset was no longer detected and I was not even able to find it in the audio device list even with "Show Disabled Devices" active. I am using Windows 7 Professional and if it matters, an MSi Z97 Gaming 5 Motherboard.