The main volume, the high tone adjustment and the adjustment are all adjusted by the analog components to upgrade the mini mixer, allowing you to play the music world and give you the real HIFI sound effect.2. This machine has a USB interface, and a -in MP3 is used to download the music you like to the disk and insert it into the machine, and instantly plug and play without waiting.3. Full function infrared control, convenient man-machine dialogue, make function operation simple and easy to understand, let you do whatever you want.4. It can support many people to sing at the time. Let you and your enjoy the of singing.5. Wireless Bluetooth, easy to connect for ,, smart phones, computers and other Bluetooth devices, USB interface, is, and use, and enjoy high quality music.Rated : 80W + 80W: 300W + 300WStandard Impedance: 4-16OhmFrequency Response: 20-20KHZ(3DB)Signal-to-noise Ratio: 80DB (A ) Harmonic Distortion: 0.5% (normal working conditions)Signal Input Sensitivity: 200MV(30MV)MIC Input Sensitivity: 9MV(2MV)Recording Level Output: 1VAuxiliary Level Output: 1VUse Of Voltage: AC /DC 12V 50/60HZPlug Type: Plug,it applies to Indonesia, Germany, , Spain, and so onType: Amplifiercolor:BlackMaterial:Metalsize:18 x 15.5 x 5cmPackage Contents:1 /Car Amplifier1 x Remote ControlOnly the above package content, other products are not included.Note: Light reflection 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.