Sony EZWT100 S-AIR Signal Transmitter - Black (Old Version) (Discontinued by Manufacturer) Send sound to an individual speaker or whole wireless system Transmits 8 channels of LPCM (CD-quality) audio wirelessly Must be used in conjunction with the AIR-SA10 (sold separately) Wireless transmitter for S-AIR-ready Sony products Compatible with Sony DAV-HDX275 home theater system Wireless transmitter for S-AIR-ready Sony products Must be used in conjunction with the AIR-SA10 (sold separately) Compatible with Sony DAV-HDX275 home theater system Transmits 8 channels of LPCM (CD-quality) audio wirelessly Send sound to an individual speaker or whole wireless system