New CABLES UNLIMITED SPK-ROCK3 AUDIO UNLIMITED?PREMIUM 900 MHZ WIRELESS ROCK SPEAKER SYSTEM WITH DUA 900 MHz wireless Rock speaker system. The powerful dual power transmitter uses 900 MHz technology send music through walls floors to the wireless speaker up to 150 feet audio inputs including RCA inputs for home theater receivers, MP3 players, computers, iPods, and iPhones.&lt;br&gt;&lt;br&gt;