The Pioneer CDRB10 adapter allows you to connect any auxiliary source (cassette, MP3, Minidisc, etc.) with RCA outputs to your Pioneer changer-controlling receiver (with IP-Bus input). The CDRB10 accepts a RCA patch cable from your auxiliary source and connects to the changer inputs on the Pioneer receiver. The auxiliary source must have a output voltage of 1 volt (or less), or a volume control to adjust output level. This adapter can also be used in reverse to connect the XM Satellite Radio Tuner included in the GEX-FM903XM FM modulated package to any receiver that has an auxiliary input.