Features: Brand new and high quality. The first stage is the RFI filter DC circuit. It uses two 50A bridge rectifiers and four 35V2200UF capacitors to filter the DC component in the AC power, suppressing humming caused by DC component transformer saturation or increased static current. Differential mode filtering with two differential inductors filters AC power in differential mode to suppress mid- and high-frequency interference. First-level common mode filter, using an X2 capacitor and common mode inductor, combined into a first-level common mode filter. The second level of common mode filtering provides better filtering due to the two-stage design. It can play an inhibitory role in addressing the issue of rapid transient group pulse interference with repetition rates of several kilohertz in some users. This module is used with a decoder or power amplifier to filter the DC component in the power supply, eliminate and suppress transformer hum, high-frequency noise in the power supply, purify the power supply, and significantly improve sound quality, enhance resolution, and create a quieter background. Specifications: Name: Power EMI Power Filter Input Voltage: AC 110V-250V (max 250V) Output Voltage: AC 110V-250V Working Current: 4A / 10A / 20A (optional) Board Size: 108mm x 50mm Note: No retail package. Please allow 0-1cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1pc x Power EMI Power Filter