PYLE PLE520P 5-Band Rotary Control Pre-Amp Parametric Equalizer with Subwoofer Output Half-din size RCA Pre-amp Line Aux Inputs Output Volume Control Input Gain Adjustments Sub Output Isolated DC To DC Power Supply Frequency Gain Control 5 Band Parametric Control 20 Total Frequency Band Selector Defeat Switch Remote Power On/Off 12dB Boost/Cut Rotary Band Control Rotary Fader Control 6 Channel RCA Outputs Signal to Noise Ratio: &gt; 90dB Frequency Response: 15hz - 30khz Mounting Hardware Included DC 12 Volt Dimensions: 1''H x 7''W x 5.5''D Sold as : Unit