Marmitek 08200 Digital Wireless Surround Sender Black

Make your existing rear surround-speakers wireless
Connect your surround set's existing rear speakers wirelessly; no loose cables trailing through your living room.
The uncompressed digital link provides better than CD-quality sound, without interference or delay.
Improved 2.4GHz technology prevents interference with your existing Wi-Fi equipment, making them work perfectly side-by-side in the same area.
Transmitter and receiver are paired (secure pairing), enabling you to use multiple sets in the same area (6 max).
The receiver's built-in amplifier provides plenty of power for your rear speakers.
Because of the direct connection to your surround sets speaker output