Introduction to Stereo Digital Amplifier Card 1. Dimensions: 270mm in length, 130mm in width, and 50mm in height. 2. RMS 500W+500W, horn 4 ohms 3. Effective power RMS 250W+250W, horn 8 ohms 4. The bridge load can only be 8 ohms, the effective power of the RMS bridge is 1000W, and the horn is 8 ohms 5. The total peak power is 20000W, 6. The default power supply is AC220V-240V. The short circuit K1 of the power supply can be changed to a voltage of 110V-120VD, 7. Equipped with temperature protection, power overload protection, short circuit protection, and DC output protection. 8. Equipped with a 24V DC output interface for a DC fan. Power amplifiers have high power and generate heat even when discharged, so fans need to be added to work. These components also generate heat, and the fan blows air from the power amplifier section to the power supply section, not only to the heat sink, but also to the transformer, output inductor, and other heating components. 9. Auxiliary power supply+15V output 0-15V, 1A output current can be used for the front stage board 10. Equipped with a voltage limiting circuit, two illuminated red LEDs indicate voltage limitation to prevent sound overload and distortion. 11. Three core row seat L G R is the signal input. 12. The five core row seats G S are directly connected to the left entrance of the L channel.13. Used for SW1 bridging input and stereo input conversion. Bridge, stereo sound. Can only bridge the left L channel. The power amplifier is connected to ports SPK1+and SPK2+by bridging an 8-o