Ear Force X4 Dolby Digital Wireless (Headphones) - Xbox 360 Dolby Pro Logic II provides surround sound from PLII encoded audio and also enhances stereo Hear XBOX Live Chat plus stereo game sound with a heart-thumping bass boost that adds sonic realism Dynamic Talkback lets you hear chat even when the game gets louder; Separate controls for game and chat volumes. Eliminates game sounds picked up by chat mic; mic monitor lets you hear what you're saying Digital input for highest XBOX sound quality, plus analog input for TV and other audio sources