CD player with built-in amplifier (18 watts RMS/50 peak x 4 channels) Flip-down, detachable face with 2-line BioLite display Plays audio CDs, CD-Rs, and CD-RWs (including discs loaded with MP3 and WMA music files) Bass Engine (bass center frequency, width, and level, plus treble center frequency and level adjustments) BBE processing Three sets of preamp outputs Source Tone Memory HD Radio-ready Controls for an optional XM or SIRIUS satellite radio tuner Compatible with an iPod using Alpine\'\'s Full Speed controls CD changer controls Wireless Remote Control Clock CEA-2006 compliant amplifier CD frequency response:5-20,000 Hz CD signal-to-noise ratio:105 dB FM sensitivity:9.3 dBf