1、1. Original TDA8954TH chip. 2、2. The main filter electrolytic capacitor uses a capacity of 8*1800UF/35V. 3、3. Use 10A and above rectifying flat bridges to ensure a steady stream of powerful power support. 4、4. The resistor uses a five-ring metal resistor, and the main loop adopts a five-ring metal film resistor with an accuracy of ±1%, which ensures a good signal-to-noise ratio of the amplifier board. 5、5. First-class PCB quality: The PCB adopts 1.6mm thick double-sided plate, 2.0oz copper thickness, and spray tin process to ensure good current passing performance. Features: 1. Original TDA8954TH chip. 2. The main filter electrolytic capacitor uses a capacity of 8*1800UF/35V. 3. Use 10A and above rectifying flat bridges to ensure a steady stream of powerful power support. 4. The resistor uses a five-ring metal resistor, and the main loop adopts a five-ring metal film resistor with an accuracy of ±1%, which ensures a good signal-to-noise ratio of the amplifier board. 5. First-class PCB quality: The PCB adopts 1.6mm thick double-sided plate, 2.0oz copper thickness, and spray tin process to ensure good current passing performance. 6. The output uses a red ring high-current inductor to ensure that the sound is crisp and powerful. 7. When using BTL bridging, can output 420W when use 8ohm speaker Specification: Chip: TDA8954TH Working Method: Class D Rated Output Power: 2*210W Static Current: 65mA Working Efficiency: 90% Frequency Response: 20Hz-20KHz PCB Size: 142*91*28mm / 5.6*3.6*1.1in Package List: 1 * Amplifier Board 1 * Cable