Demodifier Audio Player One Channel Amp Module Amplifier Decoding Module Amplifier Amplifier Boar

Label:Yes Output impedance: 4-8 Frequency response: 150HZ-20KHZ Output power: mono 3W Installation: SMT patch Package Included:1Pc Mini Amplifier Board Mute control: Yes Supply voltage: 2V-5V (3.7V lithium battery can be used) PCB Size: length 16 × width 10.5 × thickness 2.6mm (with protruding part) Volume adjustment: none Efficiency: 90% Features: Power amplifier board with NS8002 (beyond the domestic 8002A, B, C, D) AB class efficient power amplifier chip carefully debug sound quality perfect, strong power, without any interference, it is fine! Wiring instructions:This board should be grounded, 3 feet for the power supply negative and ground sharing. 1 foot for the quiet output, and 3 feet to be connected together, when the voltage is 0 when the sound, the voltage is 0.5-5V when the silent, no sound output.