Alpine CDE-152 CD/MP3/WMA Single DIN Car CD Receiver with Bass Engine SQ, Blue Features: CD receiver with AM/FM tuner, Built-in MOSFET amplifier (18 watts RMS CEA-2006/50 peak x 4 channels), Plays CDs, including discs loaded with MP3 and WMA files, Built-in iPod, iPhone, and iPad control (see Details tab for model compatibility), App Direct mode, and Optional remote control. Audio features: 3-band parametric equalizer with 11 presets, Bass Engine SQ button with choice of five bass profiles, and Low-pass filters with subwoofer level and phase control. Expandability: Compatible with Alpine's Power Pack, Inputs: front USB and auxiliary inputs, and Outputs: 6-channel preamp outputs (2-volt front, rear/subwoofer)