Features 7-band parametric equalizer with built in subwoofer x-over Seven Parametric Equalization Bands (50Hz, 125Hz, 315Hz, 750Hz, 2.2kHz, 6KHz and 16kHz) Variable Subwoofer Output with Built-in 18dB per Octave selectable at 60Hz or 90Hz Three stereo RCA outputs: front, rear, and subwoofer Volume Gain with up to 8 Volts of Output Auxiliary stereo RCA input on rear as well as a MP3 input on the front panel Variable subwoofer output control Master volume RCA configuration Illuminated Controls Des