50W+50W+100W Amplifier Board with Treble and Bass Control, Bluetooth 5.0 HiFi 2.1 Channel Subwoofer Stereo Amplifier Board, Dual TPA3116D2 Chip BT and

50W+50W+100W Amplifier Board with Treble and Bass Control, Bluetooth 5.0 HiFi 2.1 Channel Subwoofer Stereo Amplifier Board, Dual TPA3116D2 Chip BT and

ZK-TB21 Bluetooth 5.0 amplifier board comes with 2.1 channel stereo,Dual TPA3116D2 Chips,THD ≤0.1%. Wide Voltage Input DC: 9-24V Bluetooth+AUX Input:50W+50W+100W Bluetooth 5.0 Audio Amplifier Board, Bluetooth+AUX audio dual input, 2.1 channel stereo output, with AM interference suppression function. Note: When using AUX mode, please confirm that the Bluetooth connection of this module has been disconnected Treble and Bass Control:This digital audio amplifier board with independent treble and bass knob,the treble and bass can be adjusted by these knobs, no need to using the player or speaker Protective Function:This power amplifier board is designed with over-voltage protection, under-voltage protection, over-heat protection and short-circuit protection Note: In the case of audio input and power supply voltage/current is enough to have enough output power.The higher the supply voltage, the higher the output power.The lower the speaker impedance, the higher the output power.Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier 50W+50W+100W Amplifier Board with Treble and Bass Control, Bluetooth 5.0 HiFi 2.1 Channel Subwoofer Stereo Power Amplifier Board, TPA3116D2 BT and AUX Inputs for DIY Wireless Speakers (ZK-TB21)