This is a mini amplifier designed for 2.0CH speakers. It features treble and volume adjustment buttons for easy operation. Compatible with AC/DC12V supply, making it suitable for use at home or in the car. It has left and right channel outputs, with a rated power of 20W + 20W. The super mini size allows it to be held in one hand. Note: Adapter is not included. It supports a supply of 12V 2A-5A, with an interface size of 2.5x5.5mm. Specifications: Rated: 20W+20W Load Impedance: 4-16 Frequency: 20Hz-20KHz SNR: 90db Colour: Black Material: ABS + Aluminium alloy Size: 13.3x11.3x5cm Package Contents: 1 * Audio Amplifier 1 * User Manual Only the above package content is included; other products are not included. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual product. The allowed measurement error is +/- 1-3cm.