Bluetooth Power Amplifier Board 2.1 Channel With Subwoofer 50W X 2 Plus 100W DC 12V To 24V DIY Audio Rig For Home Theater And Bluetooth Audio 3.5mm Aux Input Treble And Bass Control

Bluetooth 2.1 Power Amp Board with Subwoofer, 50W x 2 +100W
✔️ Bluetooth 5.0, 12-24V input, 3.5mm AUX, tone controls

The compact ZK-MT21 Bluetooth power amplifier board is built for DIY audio projects, home theater rigs, and Bluetooth-enabled speaker upgrades. It combines a 2.1 channel amp with a dedicated subwoofer output and intuitive tone controls for quick sound shaping.

✅ Bluetooth 5.0, wireless input up to 49 ft range
✅ 2.1 channel output: 50W x 2, 100W subwoofer
✅ 3.5mm AUX input plus bass, treble and subwoofer controls
✅ Comprehensive protection: short circuit, over-current, over-heat, reverse polarity
✅ Power interface: 12-24V DC, 5.5mm x 2.1mm plug, copper DC connectors

💡 What is a Bluetooth power amplifier board used for in home audio setups? This handy device expands Bluetooth streaming and boosts speaker drive in one compact module.

- Handy for upgrading existing speakers with Bluetooth
- Great for compact home theater setups
- Tone controls help tailor bass and treble on the fly