Ear Force X41 Digital RF Wireless Audio+ Chat with Dolby 7.1 Sound for $149.54 shipped. Here is a screenshot for your reference. It features digital RF wireless with up to 30′ range, pure-digital sound transmission, digital input pass thru to allow the X41 and a home theater system to be connected simultaneously. Its transmitter is powered by USB with no AC adapter required. As a comparison, Best Buy currently has it for about $199.