Description High-fidelity mini audio power amplifier. The left and right channel output is the speaker or speaker interface. Low distortion provides clearer, stronger, and more powerful sound. The body is made of aluminum alloy, thick and feels good. The big knob is designed with blue LED lights. Input voltage: 12V DC Effective value of power: 20W+ 20W Maximum power: 200W+200W Channel: 2-CH Load impedance: 4-16ohm Signal to noise ratio: 70 decibels Frequency: 20Hz-20kHz Distortion rate: 0.01% Colour:black Material:aluminum alloy Package Contents: 1 x Audio Power Amplifier Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.