Audio input: Bluetooth + AUX + USB flash disk + USB computer (plug and play) Power supply: DC5-24V (high voltage recommended high power)Speaker adapter: 20-200W; 4-8 Channels: left and right stereo (stereo)Protection mechanism: overheating, overcurrent and short circuit protectionDescription:Audio input: Bluetooth + AUX + USB flash disk + USB computer (plug and play) Power supply: DC5-24V (high voltage recommended high power) Adapter speaker: 20-200W;4-8Channels: left and right stereo (stereo)Bluetooth version: 5.0(>15 meters without occlusion)Protection mechanism: overheating, overcurrent and short circuit protectionProduct size: 60x60x29mmProduct weight: about 104g (packaging)Tip: To have sufficient output power if the audio input is sufficient and the supply voltage/current is sufficient. The power supply voltage is higher, and the relative power will be larger. Speakers with different impedances will have different output power. In the case of sufficient voltage and current, the larger the ohms of the horn, the lower the relative sound power. Your attention please! Power supply voltage:12V-----8/20W+20W, 4/40W+40W15V-----8/35W+35W, 4/60W+60W19V---- -8/55W+55W, 4/80W+80W24V-----8/70W+70W, 4/100W+100WPackage includes:1 X MINI 2x100W Bluetooth 5.0 Power Amplifier Module Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.