The module's anti-noise capability has been significantly improved, delivering clear, identifiable sound with minimal background noise and clean audio output. Utilizes a dual-bridge power supply design, where each chip has an independent rectifier bridge and capacitor system, ensuring no interference between channels and enhancing left and right channel separation. The white 3P socket is an industry-standard connector, compatible with external modules such as decoder boards and Bluetooth modules, offering wide application support. The blue 3P terminal allows direct connection to pre-stage tuning boards, volume potentiometers, and similar components, enabling quick and convenient setup. For power supply, a 40W–80W dual power transformer with 11V–15V output is recommended; do not exceed 15V. Higher voltage may damage the unit, as this is a small to medium power design on a compact board. It is advisable to measure the voltage before powering on. Product model: LM1875 dual-channel 2.0 stereo pure power amplifier board Power supply: dual power, 11–15V (recommended, not exceeding 15V) Output impedance: 4 ohm, 8 ohm Power output: 2 x 20W per chip Features: high-quality materials, simple structure, power amplifier circuit design for reliable performance and broad compatibility Compatible with a small 50W transformer for easy integration 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 differences may cause slight variations in color between the image and the actual item. Measurement tolerance: ±1–3cm.