Features Active gain Equalizer with adjustable input sensitivity Master volume control with up to 7 Volts RMS of output Individual left and right sensitivity controls Seven band parametric equalizer with 12dB Boost Specific bandwidth for each band plus high frequency shelving On-board 30V bipolar switching power supply Subwoofer level control Subwoofer frequency adjustable Input CD select switch Night Illumination Design Specifications Equalization Range +12dB Subwoofer Frequency 43~120Hz, 60~20