Mini HIFI digital bluetooth audio amplifier. Built-in LCD display, with backlight function. SD Card, U disk, MP3 format play, support bluetooth wireless connection. Supports FM stereo radio. Four channel output, can connect 2 pairs of speakers below 8 inches. The newly designed front panel of dazzling color light brings cool feeling With treble, , and volume control, very easy to use. Low distortion supplies a clearer, stronger and more powerful sound. Two main channel output. With Remote control function. DC in, Suitable for your car. 1. Rated voltage: DC12V 2. Rated : 60Wx4 3. Maximum : 180Wx4 4. Resolution: 20-20KHz 5. Distortion rate: 04 6. Impedance: 4-16 ohm 7. SNR: greater than equal 80dB 8. Effective frequency range: hz-20 20KHz 9. Input sensitivity: 150-300mv 10. Model Number : Home Theater Amplifiers colour:Black Material:Metal Package Contents: 1 x Audio Amplifier 1 x English Manual 1 x Remote Control(random color, cannot choose the specified color) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.