Subwoofer Audio Amplifier Board: 100W+100W Bluetooth 5.0 wireless connectivity, supports Bluetooth, USB, and AUX audio inputs, 2.1-channel stereo output with minimal sound distortion. Note: When using AUX mode, ensure the module's Bluetooth connection is disconnected;

Treble and Bass Adjustment: This digital speaker board features dedicated treble and bass adjustment buttons, allowing direct tweaking via the module without needing a player or speaker;

Perfect Sound Experience: Equipped with a powerful chip, AM interference suppression, shielded power inductors, and a low-noise front-end operational amplifier, this audio subwoofer module delivers an enhanced audio experience;

Protection Features: This Bluetooth amplifier module incorporates overvoltage protection, undervoltage protection, overheat protection, and short-circuit protection, complete with a protective housing;

Easy Installation and Use: Each interface is clearly labeled with illustrations printed on the protective board, making installation and operation straightforward even without instructions. Compact Size: 4.4 inches × 2.75 inches × 0.78 inches (11.2 cm × 7 cm × 2 cm), ideal for portability;