2.5mm Straight Xbox Talkback Cable Connects various Turtle Beach headset mics from the in-line amplifier to the Xbox 360 controller for Xbox LIVE chat. The headsets that the Talkback Cable will work for are as follows: XL1, PX21, DPX21, DX11, PX3, X11, X12, PX11, DPX21 and similar/equivalent models