Dual XDMA6630 In-Dash AM/FM/CD/MP3/WMA Receiver wih Direct USB Control for iPod/iPhone 4 Audio Channels WMA & MP3 Audio Formats AM/FM/CD/MP3 USB control for iPod/iPhone Single DIN CD-R/RW, WMA, MP3 playback with FM/AM tuner Faceplate security: detachable RMS power output: 18 watts x 4 channels Peak power output: 60 watts x 4 channels