ZK-TB21：
Product Name ：2.1 channel audio amplifier module with Tone
Product Model：ZK-TB21
Bluetooth Version ：5.0 (no shielding， 10 meters)
Input Sensitivity：500mV
Audio Input：AUX+Bluetooth
Channel ：2.1
Chip Solution：TPA3116D 2(with AM interference suppression)
Power Range：DC 12~24V/5A above(high power recommended high voltage)
AdapterSpeaker：20W~100W，4~8Ω
OutputPower：Max50W@R&Lchannel
Max100W@subwoofer

Product parameters:
1. Product Name: 2.1 Channel TPA3116D2 Bluetooth Amplifier
2. Amplifier chip: 2x TPA3116D2
3.Maximum output power: 2x50W+100W
4.Power supply: DC12~24V
5.Channel: 2.1
6.Output impedance: 4~8ohm
7. Type of work: Class D
8.Audio input: AUX / Bluetooth 5.0
9. Color: Matte Black
10.Material: Plastic
11. Size:118x100x22mm

✅✅PS：In the audio input is enough， the supply voltage/current is enough， there wil be enough output power!The higher the supply voltage， the greater the output power.The smaller the impe dance of the speaker， the greater the output power!Please ensure that the power of the adaptor is greater than the actual working power of the amplifier!


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