Features:
HIFI Stereo, a high-quality two-channel amplifier board for HIFI music
It supports both AUX input and Bluetooth connection (BT5.0) for higher transmission efficiency and longer distance
The integrated high-performance processor chip is a Class D amplifier integrated circuit. The modulation frequency can reach 1.2MHz, and the distortion of high power output is less than 0.1%. Built-in LC filter capacitor, making the human voice clearer.
Both AUX and Bluetooth-compatible inputs are supported, supporting Bluetooth-compatible version 5.0.
The transmission distance is longer, up to 15 meters in outdoor environments. If your device does not have a Bluetooth-compatible module, you can also input audio signals through the 3.5mm headphone jack.
Protection mechanism: The amplifier board has overheating protection, overvoltage protection, undervoltage protection, and short circuit protection

Specifications:
Item: ZK-TB21 Amplifier Board
Chip: TPA3116D2
Input voltage: DC12V-24V5A
Power output: 50Wx2 (left and right channel) + 100W (subwoofer)
Channel: 2.1-channel stereo output
Output impedance: 4-8
Bluetooth-compatible version: BT5.0
Length: about 118 mm/4.65 inches

Note:
Due to problems with lighting effects and shooting angles, there will be certain tolerances in the product, please understand.
Please allow 0-1cm error due to manual measurement.

Package includes:
1 set ZK-TB21 Amplifier Board