The Sennheiser PC 363D establishes a new performance standard in surround sound gaming headsets. Combining Sennheiser headphone and microphone engineering with Dolby Laboratory 7.1 surround sound techhologies takes gaming to another dimension. Sennheiser's "Eargonomic Acoustic Refinement" (EAR) technology angles the drivers in the ear cups channeling the sound directly into your ears. This improves sonic detail, definition and dynamics. Dolby's 7.1 technology comes via a USB sound card providing headphone control and remarkable spacial effects letting you accurately pin point sounds with 3D like dimensionality. The PC 363D uses open back, full size metal cups fitted with luxurious velour covered ear cushions producing an extremely comfortable fit ideal for long gaming sessions. Many games incorporate player to player communication, so microphone performance is a very important element in premium headset performance. The PC363D incorporate a pro quality microphone delivering exceptional clarity. It's cleverly fitted on a boom that automatically mutes when raised. The headsets volume control is conveniently located on the right ear cup for easy level adjustments. The braided cable has a great feel and is extremely durable. The PC363D is a best in class gaming headset that will improve your skills and take you to new levels!