1. Audio Power Amplifier Board with 100W + 100W power output and Bluetooth 5.0 wireless connection, AUX input, 2.0 channel stereo output, low sound distortion, treble and bass control. Additional functions available via app. Note: When using AUX mode, ensure the Bluetooth connection is disconnected.2. High-Quality Sound Experience This audio power amplifier module features a high-performance audio chip, AM interference suppression, shielded power inductance, and low-noise preamplifier for clear highs, deep lows, and balanced sound performance.3. Treble and Bass Adjustment The amplifier board includes independent controls for treble and bass adjustment. Adjust sound settings directly on the module without relying on external players or speakers. Customize audio to suit personal preferences.4. Built-In Protection Functions Designed with over-voltage, under-voltage, over-temperature, and short-circuit protection. Includes protective case for added durability.