XH-M189 250W Digital Amplifier Board $ 6.88 Product information: Purpose: dual channel stereo amplifier board Specification: XH-M189 Product Name: pure number amplifier board Chip model: TPA3116D2 Audio type: Class D audio amplifier board Input power supply: DC 5-24V Audio response range: 20-20kHz Number of output channels: 2 channels, Stereo Overall size: 84*51 * 29MM (excluding potentiometer length) Packing list: Pure digital power amplifier board * 1 Product Image: