1. High-fidelity stereo audio amplifier 2. Enjoy powerful and clear sound quality in your car audio. With this amplifier, you can adjust the volume, bass, and treble of the song you're listening to. The amplifier has stereo input ports for left and right speakers. 3. The total volume adjustment uses an LED light ring, making it more colorful to use. 4. The mini size makes it easier to carry and put in the car. 5. The automatic anti-interference function avoids interference from many external noises and makes the sound clearer. 6． High treble and heavy bass, a variety of volumes can be amplified, and the range of uses is extremely wide. 7． Made of aluminum alloy, it has a longer service life and is not easily damaged. Color: Black Material: Aluminum alloy Rated voltage: 12-14V Rated power: 20W+20W Rated frequency: 20-20KHZ Resolution: 47K Distortion rate: 0.01 Signal-to-noise ratio: 90DBI Impedance: 4-46 ohms Power amplifier type: HIFI power amplifier Interface type: clip-on product list 1x power amplifier + 1x manual