Specification:
Item Type: Power Amplifier Board
Product Model: ZK-TB21
for Bluetooth Version: 5.0 (Unobstructed: Approx. 10meter / 32.8ft)
Input Sensitivity: 500mV
Input Method: AUX+ for Bluetooth
Number of Channels: 2.1 channels
Power Amplifier Chip: TPA3116D2 (with AM interference suppression function)
Adapter Power Supply: DC 12-24 V/5A or more (the higher the voltage, the greater the output power)
Adapted Speakers: 20-100W, 4-8Ω
Output Power: Left and right channels Subwoofer Protection Mechanism: Overvoltage, undervoltage, overheating, DC detection, short circuit protection

Package List:
1 x Power Amplifier Chip
2 x Power Amplifier Board Module
1 x Screw Accessories Pack
1 x Screwdriver Accessories Pack