Latest Bluetooth 5.0 technology: The amplifier uses Bluetooth 5.0 for transmission efficiency and reliable connectivity. The integrated potentiometer switch allows easy volume control for precise sound tuning. Advanced TPA3116D2 chip: Built with the TPA3116D2 chip, the amplifier board delivers 50W + 50W. A 12V/5A DC power supply is recommended for performance, ensuring powerful and clear sound. Versatile output modes: Seamlessly switch between Bluetooth, AUX, and USB modes to fit your connectivity needs. You can enjoy music or audio from phones, tablets, PCs, or USB sources with minimal hassle. quality audio output: The subwoofer delivers a frequency range of 20 Hz to 200 Hz for enhanced bass and overall sound quality. Ideal for watching video, listening to music, or gaming. Use scenario: Home stereo or desktop setup. Pair via Bluetooth with a smartphone or tablet, or connect via AUX/USB to a computer or media player for strong, clear sound. Use scenario: DIY or compact home theater project. Integrate with a small speaker system to achieve stereo amplification and flexible input options without clunky adapters. Use scenario: Gaming and multimedia. The wide bass range supports immersive audio in games and multimedia, providing clearer lows and better overall balance.