Plantronics Digital Surround Sound Headset (Audio 770) Digitally-enhanced virtual surround sound, engineered for gaming, compatible with Windows and Macintosh Super light comfortable headset has a full-range, adjustable headband. Pillow-soft ear cushions deliver superior comfort whether you play 10 minutes or 10 hours. The noise canceling microphone reduces background noise. Music volume and mute features are at your fingertips with convenient in-line controls. The open-ear design lets you strategize and play in real time with your teammates and hear your surroundings. Superb stereo sound and strong bass performance optimize your audio experience. USB digitally enhanced surround technology delivers huge, virtual 3D surround sound. Use an analog connection into your PC or the USB sound card.