The Ear Force PX21 integrates premium stereo game sound with crystal-clear communication on the PlayStation Network (PSN), XBOX LIVE and PC/Mac to create the definitive audio environment for playing popular game titles on all platforms. The PX21 is two headsets in onea stereo USB headset for chat sound and an amplified stereo headset for game sound. That means you can independently control chat and game sound from a single control box whether you're playing PS3, XBOX or PC games.