Product features-AM100 is a microphone audio integrated machine, 2.1 channel BT power amplifier board 50W+50W+100W, supporting wireless microphone and wired microphone, using TPA3116D2 power amplifier chip, intelligent anti-howling, DSP reverberation, two-way microphone, adjustment.Model: -AM100Name: 50Wx2+100W microphone audio integrated machineAmplifier chip: TPA3116D2BT version: 5.1BT transmission distance: 15mAudio input: BT+ AUX + USB disk + USB sound card + MICAudio output: Left channel 50W + right channel 50W + subwoofer 100WAdaptive power supply: DC12-24V,8A (Do not connect to AC)Adaptive speaker: Left and right channels 20-50W, 4-8; subwoofer 20-100W, 3-8Dual volume adjustment:1. Background music volume adjustment, with multifunction button (Click: pause, Double-click: , Long press: on/off)2. MIC volume adjustmentProtection mechanism: Input anti-reverse connection, over temperature, over-current, short circuit, anti-static protectionCharacteristic function:Dual MIC input.Support Wuzhi Audio APP. BT name, password setting, volume adjustment of prompt tone, on/off prompt tone, sleep music, firmware upgrade, etc.Size: 134x135x24mmColor: blackMaterial: plasticPackage Contents:1 x Bluetooth Amplifier Board(without case)Only 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.