Alpine CDE-9881 CD/MP3/WMA/AAC Receiver Built-in amplifier (16 watts RMS/45 peak x 4 channels) Fold-down, detachable face Full speed iPod controls (requires Alpine's interface cable - sold separate) Plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3, WMA, and AAC music files (except Digital Rights-protected files)