The ear force px21 integrates premium stereo game sound with crystal clear communication on the playstation network psn xbox livereg and pcmac to create the definitive audio environment for playing popular game titles on all platformsthe px21 is two headsets in onemdasha 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 yoursquore playing ps3 xboxreg