DESCRIPTION: [High Performance] The TPA3116D2 is a Class D amplifier IC from TI that has very high index parameters. 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 a filter inductor, the sound is round and clear. [HIFI Stereo] High quality dual channel 100W(50W*2) power amplifier board for HIFI music. With AUX, Bluetooth, USB flash drive, 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] 5.0 Blue tooth version, the transmission efficiency is higher and more stable, the transmission distance is farther. Up to 15m(49 feet) wireless range in open space. Can be widely applied to various devices such as tablet PC, TV, smartphone, laptop with Bluetooth. [High Quality] The TPA3116D2 devices feature short-circuit and thermal protection as well as overvoltage, undervoltage, and DC protection to prevent total failure. In the event of an overload, the device reports the fault condition to the processor to protect itself from damage. It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no damage to the wire. [Application] The potentiometer adjusts the volume with a switch for easy control of the volume, making it ideal for DIY speakers. TDA3116D2 is widely used in store solicitation, home theater, square speakers, etc.due to its excellent performance and comprehensive cost performance. Parameter Chip: TPA3116D2 (With AM interference supperession) Bluetooth Version: 5.0 (Without occlusion 15m) Bluetooth Name: Wuzhi Audio Audio Input: AUX + Bluetooth + USB flash drive + Computer usb sound card (plug and play) Channel: 2.0 Stereo Adaption Supply Voltage: 9-27V Speaker: 10-100W, 4-8Ohm Output Power: 12V - 8 /12W*2; 4/20W*2 15V - 8 /18W*2; 4/30W*2 19V - 8/32W*2; 4/40W*2 24V - 8/38W*2; 4 /50W*2 Protection Mechanism: overheating, undervoltage, overheating, DC detection, short circuit protection Tip: To have enough output power if the audio input is sufficient and the supply voltage/current is sufficient. The power supply voltage is higher and the relative power will be larger. The speakers with different impedances will have different output power. In the case of sufficient voltage and current, the larger the ohms of the horn, the smaller the relative sound power. Please ensure that the power of the adaptor is greater than the actual working power of the amplifier. Package Including 1 * Amplifier board bluetooth 5.0 1 * Shell 1 * Accessories as shown