Advanced TPA3116D2 Chip stereo amplifier with powerful 50W50W output. For performance, use a 12V/5A DC power supply to deliver strong, clear sound. Bluetooth 5.0 connectivity for reliable wireless streaming. The integrated potentiometer provides easy, precise volume control. Versatile input/output modes for flexible setup. Seamlessly switch between Bluetooth, AUX, and USB to match your devices and sources. bass performance. Subwoofer output delivers a 20 Hz to 200 Hz range, enhancing bass for movies, music, and gaming. Key benefits Simple upgrade to a wireless or wired audio system for existing speakers. Reliable Bluetooth 5.0 connection with straightforward volume adjustment. Strong stereo power with clear sound and a bassfocused output for richer audio. 23 practical use scenarios Home stereo upgrade: convert bookshelf speakers into a Bluetoothenabled stereo system for convenient wireless music playback. Desktop PC or gaming setup: connect via USB or AUX for quality computer or console audio, with Bluetooth as an additional streaming option. Small living room or home theater: use Bluetooth to stream from a TV or mobile device and enjoy enhanced bass with the 20 Hz–200 Hz subwoofer range. Notes For results, power with a 12V DC supply at 5A. The board supports Bluetooth, AUX, and USB inputs for flexible source options and easy integration with existing devices.