The module's anti-noise capability has been significantly improved, delivering clear, identifiable sound with minimal background noise and no distortion. Featuring a dual-bridge power supply design, each chip has an independent rectifier bridge and capacitor system, ensuring stable performance and improved channel separation for left and right audio channels. The white 3P socket is an industry-standard connector, compatible with external modules such as decoder boards and Bluetooth receivers, offering wide application flexibility. The blue 3P terminal allows direct connection to preamplifier tuning boards, volume potentiometers, and similar components, enabling quick and convenient integration. For power supply, we recommend using a 40W80W dual-output transformer with 11V15V output. Do not exceed 15V, as higher voltage may damage the board due to its small to medium power design. It is advisable to measure the voltage before connecting power. Product model: LM1875 dual-channel 2.0 stereo power amplifier board Power supply: Dual power, 1115V (recommended, not to exceed 15V) Output impedance: 4 ohm, 8 ohm Power output: 2 x 20W Advantages: High-quality materials, simple structure, efficient amplifier circuit design, reliable performance, and broad compatibility Simply pair with a 50W transformer for easy setup. Color: Black Material: ABS Dimensions: 68mm x 76mm Package includes: 1 x Amplifier board Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display settings may cause slight variations in color between the image and the actual product. Measurement tolerance: 13 cm.