CD/MP3 MARINE RETRACT.FACE 52WX4 XM RDY Plays CDs, CD-Rs, and CD-RWs (including discs loaded with MP3 and ATRAC3plus files) CD receiver with built-in amplifier (23.2 watts RMS/52 peak x 4 channels) EQ3 (3-band equalizer and 3 preset tone curves) 18 FM/12 AM presets XM Satellite Radio controls