Product highlights: General features: CD receiver with built-in amplifier (18 watts RMS CEA-2006/50 peak x 4 channels) plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3, WMA, and AAC music files (except Digital Rights-protected files) fold-down, detachable face with a 2-line BioLite text display remote control Audio features: 24-bit Burr-Brown digital-to-analog converter digital signal processor includes a 7-band equalizer (switchable to 5-band parametric mode), 6-channel digital time alignment, and high- and low-pass filters Alpine's Imprint MultiEQ sound tuning technology (requires an external tuning module) Expandability: compatible with: Alpine iPod adapter, Bluetooth® adapter, satellite radio, HD Radio™ tuner, CD changer inputs: optional aux input outputs: three sets of 4-volt preamp outputs (subwoofer output has bass level control) compatible with most factory steering wheel audio controls (adapter required) Other features and specs: CEA-2006 compliant amplifier warranty: 1 month MFR # CDA-9887