Dimensions: 125 x 75 x 40mm Weight: 200g Operating Power: DC12V 2-5A Output: 20W + 20W 2ch Stereo Frequency Response: 20Hz - 20KHz Impedance: 4-16Ω THD: 0.01 (1Khz 1W) SNR: >90dB Input Impedance: 47K This is a compact and simple audio amplifier. It features a maximum output of 20W + 20W Hi-Fi stereo sound with individual adjustment of treble and bass. Set Contents: Amplifier main unit, foreign language instruction manual *We do not provide support for usage. An adapter is not included. ◎Notes◎ Due to being an overseas product, there may be minor scratches, dirt, distortions, and loose threads. There is no problem with the quality of the product. Scratches that do not affect use are not eligible for exchange. Please refrain from purchasing if you are looking for a perfect product. We conduct inspections, but if there are any problems such as defective products, please contact us before leaving a review. We will respond promptly. Please note that we do not accept returns due to reasons such as a difference in image at the buyer's convenience.