Razer have announced a brand new set of wireless headsets that are compatible with the Xbox 360 as well as other devices.  Coming in two flavors, the Chimaera 5.1 Surround Sound and Chimaera Stereo, these headsets focus on audio quality and communication while cutting the cords.   While the set is designed to work for the Xbox 360, the base station contains many standard input jacks allowing you to hook the cans up to your PC or other devices.