Bluetooth 5.0 connectivity with precise volume control: Equipped with Bluetooth 5.0, the amplifier offers transmission efficiency and reliable wireless connectivity. The integrated potentiometer switch enables easy, precise volume adjustment. Subwoofer focused audio output: The subwoofer delivers a frequency range of 20 Hz to 200 Hz, providing deeper bass to enhance movies, music, and games for a more immersive listening experience. Powerful and clear amplification: The board uses the TPA3116D2 chip to achieve 50W50W of output. For performance, a 12V/5A DC power supply is recommended. Versatile input and output modes: Seamlessly switch between Bluetooth, AUX, and USB modes to match your devices and sources, ensuring flexible and hassle connectivity. Practical use scenarios: Watching movies at home with a Bluetooth source to enjoy strong bass from the subwoofer. Listening to music from a phone or computer via USB, AUX, or Bluetooth for enhanced audio clarity. Gaming with a computer or console, using USB or AUX input to deliver powerful, clear sound.