Jukebox Switch - Audio Activated Line Level Switch -<span style='color:#F90000'><strong>SORRY, THIS ITEM IS NO LONGER AVAILABLE</strong></span style='color:#F90000'>
Amazon.com: Professional 4-Way RCA Phono Line Level Stereo Audio Switcher Selector with 2 Selectable Outputs : Electronics
ST42 4-Way RCA audio switch source signal input switcher selector 4 IN 2 OUT blc | eBay