PIE PIOPRCA Aux Adapter For Pioneer Ip Bus The PIO/P-RCA Auxiliary Input Adapter is designed for use with aftermarket Pioneer IP Series products and serves two functions Will convert the output (IP-BUS OUT) connection of the Pioneer XM-Satellite tuner (model GEX-FM903XM) into stereo RCA outputs, thus avoiding the use of an FM modulator and unwanted static noise The part also converts the CD changer port of a Pioneer head unit to RCA input, allowing a variety of program sources to be added to the Pioneer head unit without FM modulation