[HiFi and Stereo] High quality 100W (50W x 2) dual channel power amplifier board for HiFi music. With AUX, Bluetooth, USB dongle, USB sound card, multiple audio input methods. With active and passive speakers, two output methods. You can enjoy your music in different ways. [Super compatibility] Bluetooth 5.0 version, the transmission efficiency is higher and more stable, the transmission distance is farther. Wireless range up to 15m in open space. Can be widely used for various devices such as tablet, PC, TV, smartphone, laptop with Bluetooth. [High performance] TPA3116D2 is a Class D amplifier IC from TI which has parameters of very high index. The advanced oscillator/PLL circuit uses multiple switching frequency options to reject AM interference. The modulation frequency can be up to 1.2MHz, and the high-power output distortion is less than 0.1%. This helps prevent noise. With an inductor filter, the sound is round and clear. [High Quality] TPA3116D2 devices have short-circuit and thermal protection as well as over-voltage, under-voltage protection. -voltages and DC to avoid total failure. In the event of an overload, the device reports the fault condition to the processor to protect against damage. It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no wire damage. [Application] The potentiometer adjusts the volume with a switch for easy volume control, which makes it ideal for DIY speakers. The TDA3116D2 is widely used in store solicitation, home theater, square speakers, etc. because of its excellent performance and comprehensive cost.