ZK-TB21 Bluetooth 5.0 Amplifier Board 2.1 Channel 50W+50W+100W Mini Bluetooth AMP with Subwoofer, Bass Treble Control, AUX/DC 12-24V, Home DIY Wireless Speaker Audio Module
Price: $19.99 - $18.99
(as of Apr 12, 2026 08:34:05 UTC – Details)
Product description
2.1 Channel High-Power Output: Delivers 50W+50W for left/right channels and 100W for the subwoofer. Supports 4-8Ω speakers for full, punchy stereo sound—perfect for DIY wireless speaker or home audio projects
Bluetooth 5.0 & AUX Inputs: Stream wirelessly up to 10m via Bluetooth 5.0 or connect devices with 3.5mm AUX. Works with smartphones, tablets, or PCs, ideal as a mini amplifier for speakers in small setups
Independent Bass & Treble Control: Adjust highs and lows directly on the board for precise sound customization. Perfect for movies, music, or gaming, enhancing any speaker amp setup without extra equipment
TPA3116D2 Chip with AM Interference Suppression: High-performance chip with shielding delivers ultra-clear, low-noise audio. Optimized for bluetooth amplifier for speakers or small amplifier projects needing high-definition sound
Compact DIY-Friendly Design & Protection: 118x100x22mm board with labeled ports ensures easy installation. Features over-voltage, under-voltage, short-circuit, and over-heat protection—safe for 12V bluetooth amplifier and home DIY builds
