Digital audio amplifier DC12V 2x20W AK170 This is of a mini 2-channel speaker power amplifier. Supports AC / DC 12V power supply, suitable for home and car use. Output for left and right channel, nominal power 20 W + 20 W. Features Power supply: DC12V (power supply not included) Rated power: 20 W + 20 W. Load impedance: 4-8 . Frequency: 20 Hz - 20 kHz. SNR: 90 dB. Material: ABS + aluminum alloy. Color: black. Dimensions: 13.3 x 11.3 x 5 cm. Weight: 250 g