7 Band Graphic Equalizer. 12dB Boost/Cut. Power On/Off Defeat. 2 Channel High Power Amplification. 2 or 4 Speaker Hook up. 200 Watts Rated Power 2 x 100 Watts. Built in Heavy Duty Heat Sinks. Dual LED Power Meter Display. Fader Control. Volume Slide Control. Night Illumination Around all Controls. Input Impedance: High 47k Ohm via RCA Jacks. Common or Floating Ground Hook up. Frequency Response: 20-20kHz. Output Impedance: 4 Ohm (4-8 Ohm allowable).