Specification:  Size: 25 x 21.5 x 6cm/9.8 x 8.5 x 2.4inch.  Rated voltage: 110-220V 50 / 60Hz.  Peak power: 2000W.  Rated frequency: 20KH - 20KHz.  Signal to noise ratio: 90dB.  Standard impedance: 4 to 16 ohm.  Channel: 5 channel output.  Total harmonic distortion: ≤ 0.5%.  Signal input sensitivity: 200mv (± 30mv).  Microphone input sensitivity: 9 mv (± 2mv).  Recording level output: 1V.  Auxiliary level output: 1V.     Features:  Car Audio Equalizer EQ w/ Front, Rear + Sub Output.  Includes mounting brackets and screws for easy installation.  7 adjustable bands of equalization (50Hz,125Hz,315Hz,750Hz,2.2KHz,6KHz and 12KHz).  Each band is adjustable from -18dB to +18dB.Adjustable subwoofer frequency from 45Hz to 120Hz.Built in crossover，Subwoofer level controls and subwoofer frequency cutoff controls (40-250 Hz).Built in 7 volt.  Blue LED lights on each rotary knob.Front, rear, and sub preamp outputs.Aux input with gain knob to adjust aux volume.  Strong metal chassis with high quality rotary knobs for all controls.  Amazing quality with low distortion (Built with top quality components).  Frequency response: 15Hz TO 30KHz +/- 1dB.  S/N Ratio: 101 dB.  Crossover Roll-Off: 12dB per octave.  Input impedance: 10K.  THD: 0.01%.  Input: 12V.  Output: 15V.  Dimensions: 17.88 x 11.99 x 2.79cm/7.04 x 4.72 x 1.1 inch.     Package Included:  1 x Amplifier;  1 x Screws;  1 x Bracket;  1 x User Manual