Features: Stereo audio amplifier with RCA and AUX input, compatible with many audio devices, giving your entertainment or PA system a boost and offering low distortion & acoustically accurate audio reproduction. Rated 40W+40W output power: support speakers with 4-8 ohms impedance, has a good match with most home & car & boat speakers, can give your entertainment system a boost, with unrivaled sound superiority and lets you enjoy high-quality amplified audio. With treble and bass control (±10dB adjustment range), bring more delicate and high-quality sound. Blue LED light is designed around the volume knob which also serves as a power indicator, looks more dynamic and cool. Mini size with concise and powerful function, besides being used in home desktop audio system, it also can be used in your car, your boat, your RV, your golf cart— anywhere you need a great amplifier with low distortion and acoustically accurate reproduction of music. The amplifier can be played using an audio cable connected to the headphone jack of a computer or mobile phone. Specifications: Audio input: RCA/AUX Audio output: Speaker Jacks Rated voltage: DC 12V Rated power: 40W + 40W Frequency response: 20Hz-20KHz Speaker impedance: 4-8 ohms Treble & Bass gain: ±10dB Resolution: 47K THD: 0.1 SNR: 90dB Dimensions(L*W*H): 155*75*46mm/6.10*2.95*1.81in Net weight: 279g/0.62lb Package Weight: 400g/0.88lb Package Included: 1 x Digital Amplifier