Specifications: Features: CD receiver with built-in amplifier(18watts rms/50 peak x 4 channels) Detachable, fold-down face(withsilver and blue cosmetics and variable button color) Plays audio cds, cd-rs and cd-rws including discs burned with MP3 and WMA files Bass engine(basscenter frequency, width, and level, plus treble center frequency and level adjustments) Mediaxpander(restoresclarity and detail to compressed or broadcast audio) Maxtune sq tuner 12 FM/6 am presets Source tone memory Ipersonalize setup options Xm and sirius satellite radio controls CD changer controls for alpine ai-net changers only Front, rear and subwoofer preamp outputs Clock Wireless remote Cea-2006 compliant amplifier CD frequency response 5-20,000 hz CD signal-to-noise ratio 105 db FM sensitivity 9.3 dbf Compatible with european tuner