Feature: 1. THREE STAGE COMPOSITE: Three stage composite (one stage differential mode and two stage common mode) EMI filter circuit. One stage common mode filtering, through X2 capacitor and common mode inductor, combined into common mode filtering. 2. TWO STAGE FILTERING: EMI EMC power supply filtering board uses two stage filtering, filtering noise better. Significantly improve the sound quality of the amplifier, improve the resolution and make the background quiet. 3. FAST TRANSIENT GROUP PULSE INTERFERENCE SUPPRESSION: EMI EMC power supply filtering board can suppress the problem of fast transient group pulse interference with a repetition frequency of several kilohertz at certain user sites. 4. ONE STAGE DIFFERENTIAL MODE FILTER: One stage differential mode filtering, two differential mode inductors, differential mode filtering of the AC power supply to suppress medium and high frequency interference. 5. ELIMINATE NOISE: Filter board with the decoder or amplifier can be used to filter the DC component of the power supply, eliminate and suppress transformer hum, high frequency noise in the power supply, clean power supply. Specification: Item Type: Power Supply Filtering Board Material: PCB Input Voltage: Single Phase AC 100-250V Output Voltage: Single Phase AC 100-250V Rated Current: 4A Input Port: 3 Wire 7.62 Socket Output Port: 2 Wire 7.62 Socket. Package List: 1 x Power Supply Filtering Board Note: Please allow some error due to manual measurement.