Ear Force DPX 21 Dolby 7.1 Surround Sound Universal Gaming Headset Bundle... The DPX21 combines two of Turtle Beach's hottest products into one deluxe combo package. We took our battle-tested PX21 headset, designed for PS3, XBOX 360 and PC/Mac gaming, and partnered it with the Ear Force DSS to transform the PX21 into a full Dolby digital surround sound headset. The PX21/DSS combo pushes your PS3 and XBOX 360 gaming experience to a new level with the thrilling realism of Dolby 7.1 surround sound and crystal-clear communication over PlayStation Network or XBOX LIVE--and saves you a bundle over the cost of buying the PX21 and DSS separately. Includes Ear Force PX21 Headset with amplifer, Ear Force DSS digital audio processor, Digital optical cable, USB cable, Xbox Controller Talkback cable, and User's guide.