Bluetooth 5.0 50W+50W+100W 2.1 Channel Subwoofer Amplifier Board Tpa3116D2 Hifi Treble And Bass Control Stereo Digital Audio Amp

Zk-Tb21 Bluetooth Amplifier Board Input Voltage: Dc 12V-24V Max Power Output: 50W*2(R&L)+100W(Subwoofer) Input Method: Bluetooth & Aux Channel: 2.1 Ch Stereo Output Output Impedance:4-8O Bluetooth Version:Bt 5.0 Protection Functions: Reverse Connection Protection Short Circuit Protection Self-Recovery Overheat Protection Size: 120*100*22Mm Weight: 195G Note: Only When The Audio Input Is Sufficient And The Power Supply Voltage/Current Input Is Sufficient, Can There Be Enough Power Output. The Higher The Power Supply Voltage, The Greater The Output Power; The Smaller The Impedance Of The Speaker, The Greater The Output Power. It Is Recommended To Use A 4O Speaker. Finally, Please Make Sure That The Power Of The Adapted Power Supply Is Greater Than The Actual Working Power Of The Amp To Ensure The Maximum Output Power. Warm Reminder: The Power Switch On The Board Is A Standby Switch. After The Switch Is Turned Off, The Machine Is In A Low-Power Standby State. To Completely Turn Off The Power Or Unplug It For A Long Time, You Can Unplug The Dc Plug On The Machine. Properly Increasing The Voltage Or Reducing The Speaker Impedance Can Effectively Increase The Output Power. Packing Include: Zk-Tb21 Power Amplifier Board * 1 Protective Shell * 1 Set Dc Plug * 1 Screwdriver * 1 Knob * 5