TPA3116 ZK-TB21 Power Amplifier Board Bluetooth5.1 2.1 Channel 50WX2+100W DC 12-24V

TPA3116 ZK-TB21 Power Amplifier Board Bluetooth5.1 2.1 Channel 50WX2+100W DC 12-24V

ZK-TB21 2.1 Channel Bluetooth Amplifier Board – 50W+50W+100W

Upgrade your DIY audio projects with the powerful and compact ZK-TB21 Bluetooth Amplifier Board. Designed with dual TPA3116D2 amplifier chips, this high-performance 2.1 channel amplifier delivers crystal-clear stereo sound with deep bass output, making it ideal for home theater systems, custom speaker builds, subwoofer setups, and multimedia audio projects. It supports both Bluetooth 5.0/5.1 wireless streaming and AUX input for flexible connectivity.

Key Features
Powerful 2.1 channel output: 50W × 2 stereo + 100W subwoofer
Built-in Bluetooth 5.0/5.1 for stable wireless audio streaming
AUX input support for TVs, PCs, laptops, and mobile devices
Premium TPA3116D2 Class-D amplifier chips for high efficiency and low distortion
Independent bass, treble, and volume controls
Large aluminum heatsink for stable long-term performance
Supports 4Ω–8Ω speakers
Wide DC 12V–24V input range
Compact design ideal for DIY audio projects and custom speaker systems
Specifications
Model: ZK-TB21
Amplifier Type: Class-D 2.1 Channel
Amplifier Chip: TPA3116D2
Output Power: 50W × 2 + 100W
Input Modes: Bluetooth + AUX
Bluetooth Version: 5.0 / 5.1
Input Voltage: DC 12V–24V
Speaker Impedance: 4Ω–8Ω
Frequency Response: 20Hz – 30KHz
Protection Features: Overheat, short circuit, reverse polarity protection
Applications

Perfect for:

DIY Bluetooth speaker projects
Home theater audio systems
Subwoofer amplifier setups
PC and TV audio enhancement
Car audio projects
Workshop and entertainment sound systems