Sony CDX-GT81UW In-Dash CD/MP3/WMA/AAC Receiver w/UniLink Control CD player with built-in amplifier (17 watts RMS/52 peak x 4 channels) plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3, WMA, AAC, and ATRAC3plus music files (except Digital Rights-protected files) EQ3 (seven preset tone curves and a 3-band parametric equalizer) compatible with Sony's iPod adapter, HD Radio tuner, and satellite radio (tuner, subscription, and antenna required) inputs: front-panel auxiliary and USB inputs