Added AUX3.5mm audio interface.Mini HIFI audio power amplifier.Two main channel output.Left and right channel outputs are interfaces for speakers or speakers.Low distortion supplies a clearer, stronger and more powerful sound.Made up of aluminum alloy body, thick, feel is also very good.Large knobs are designed with blue LED lights tomake the products morebeautiful and beautiful.Product name: Power AmplifierCurrent requirement: above 2AOutput power: 20WX2Product power port: 2.1X5.5mmChannel: 2CHAUX:3.5mmLoad impedance: 4-16ohmSNR: 90 dbFrequency: 20Hz-20KHzDistortion rate: 0.01%Colour:blackMaterial:aluminum alloyPackage Contents:1 x Power AmplifierOnly 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.