Audio power amplifier Digital word integrated circuits The power switch control function Treble / bass / volume control Audio Input Block Colorful LED lights known as Torr appearance Aluminum case Frequency response: 20Hz-20KHz Signal-to-noise ratio:> 85dB Speaker Impedance: 2-8Ω Input impedance: <1KHz Input Sensitivity: 200mv/47KΩ Power: DC 12V 2-channel output power: 40W +40 W