Features: * Mini high-fidelity digital bluetooth audio power amplifier. * Built-in LCD display with back light function. * Storage card, U disk, mp3 format game, support bluetooth wireless connection. * Support FM stereo radio. * Four output channels, can connect 2 pairs of speakers less than 8 inches * The newly designed colorful lighting front panel brings coolness * With treble, bass and volume control, it is very easy to use. * Low distortion provides clearer, stronger and more powerful sound. * Two main output channels. * With remote control function. * DC power input, suitable for your car. Specification: Name: Power amplifier Material: aluminum alloy + plastic Rated voltage: dc12v Rated power: 40wx4 Resolution: 47k Distortion rate: 0.4% Impedance: 4-16 ohm Signal to noise ratio: -95db Effective frequency range: 20Hz-20khz Color: black Packing included: 1 * Power Amplifier 1 * Remote Control