ZK TB21S 2 1 Channel bluetooth Audio Amplifier Board Module Subwoofer Mid pitched High pitched TPA3116 Bass AMP 50WX2 100W for Sale with BTC on Gipsybee.com


Price: 0.0015884 BTC

Amplifier Board

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Product Specification


product name: 2.1 channel bluetooth audio power amplifier board module
Product Model: ZK-TB21S
Amplifier chip: TPA3116D2
Number of channels: 2.1 channels (left channel + right channel + subwoofer)
Input method: AUX+Bluetooth+U disk+USB sound card
Bluetooth version: 5.1
Switch mode: Mechanical switch (no need to wait for a long press)
Adapter power supply: DC12~24V, ≥8A
Adapted speakers: Left and right channels 20-50W, 4-8Ω subwoofer 20-100W, 3-8Ω
Output power: Left and right channels ≤ 50W subwoofer ≤100W
Protection mechanism: Input anti-reverse connection, overheating, overcurrent, short circuit protection
Product size: 119*100*22mm
Product weight: Net weight 196g including packaging 248g


Only when the audio signal input is large enough and the power supply voltage/current is large enough will there be enough Output Power!
The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!
Please ensure that the power of the adapted power supply is greater than the actual working power of the power amplifier!

Package includes:

1 x 2.1 channel bluetooth audio power amplifier board module