Sony CDX-F5510 Xplod CD/MP3 Receiver Professional installation recommended CD Changer requires a separate purchase Up to 30 AM/FM Presets An upgrade path allowing functional integration between an XM Satellite tuner and a CD/MD control head unit. An XM Ready head unit has the capacity to control all the functions of an XM tuner, and display a variety of XM Satellite radio station information that can include the currently playing song title, artist, station identification number, station name, and a host of other data. Upgrading to add XM Satellite radio capability requires the purchase of an XM tuner, an XM antenna, and a subsc