1. High efficiency: TPA3118D2 adopts Class-D amplification design, which can provide high power output while maintaining high efficiency, reducing energy consumption and heat generation. 2. Stereo output: Supports dual channel output, with each channel providing up to 50W of continuous output power, suitable for driving medium to high power speakers. 3. Wide power supply voltage range: The working voltage range is wide, usually supporting from 12V to 24V, making the amplifier board suitable for various power supply environments and increasing application flexibility. 4. Built in protection mechanism: It integrates overvoltage protection, overcurrent protection, overheating protection, and short circuit protection, without the need for complex protection circuits, simplifying design and improving reliability. 5. Adjustable volume: The volume can be adjusted by turning the knob to the right to increase the volume, and to the left to decrease the volume until the amplifier board is turned off. This product uses a new IC chip with overvoltage protection, overcurrent protection, overheating protection, and short circuit protection. The input voltage is 12-24V, and the output power is 50W x2 (50W x2 when the input voltage is 24V, and 25Wx 2 when the input voltage is 12V). The volume can be adjusted by turning the knob to the right to increase the volume, and to the left to decrease the volume until the power amplifier board is turned off. High definition BT 5.0 or AUX port audio input, dual channel output. Product Name: Digital BT Amplifier Board Specification and model: XH-A415 Chip selection: TPA3118D2 Power input: 12-24V Audio input: AUX/BT Output power: 50W x2 (24V power supply=50W, 12V power supply=25W) Impedance matching: 4-8 Number of channels: Dual channel Different production batches have different appearances but do not affect use Colour:As Shown Material:Metal + Plastic Package Contents: 1 amplifier board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.