ALPINE CDE-9872RM Car Stereo Radio CD MP3 Player Receiver with Detachable Face. Information below copied off internet.
Manual can also be downloaded. Offers the convenience of MP3 playback, a strong built-in amplifier, and a detachable face for security. The Bass Engine® features highly adjustable bass and treble controls that allow you to tune the stereo's sound to perfection. CD receiver with built-in amplifier (16 watts RMS CEA-2006/45 peak x 4 channels). Plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3 music files.
Bass Engine (bass center frequency, width, and level, plus treble center frequency and level adjustments). High-pass filter (speaker and preamp outputs). Compatible with Alpine's iPod adapter with percentage search.
Outputs: one set of preamp outputs (switchable to subwoofer mode with bass level control).