Audiovox CNP2000UCA XM Direct2 Main Kit Universal XM Satellite Radio Programmable Interface Adapter Allows conversion of your existing aftermarket head unit into an XM Radio receiver Direct connection allows for greater digital sound quality Features built-in expansion port (pass through connection) for additional compatible manufacturer devices like iPod adapters or CD changers Compatible with the XM Mini-Tuner, a portable subscription cartridge that will eliminate the need to have multiple subscriptions