The XA-C40 Source Selector lets you connect up to three Unilink system sources to your Sony in-dash stereo. Your add-on options include a CD changer, satellite radio, iPod® adapter, and more. This XA-C40 Source Selector comes into play when just one of those sources isn't enough for you.
If you need to connect more than three pieces of equipment, you can add up two additional XA-C40 Source Selectors for a total of up to seven pieces of Sony Unilink gear. You can only connect one satellite radio to the system. It'll work with either of Sony's XM or SIRIUS tuners, but only one of them at a time. Warranty: 1 year.