1. First level differential mode filtering with two differential inductors for differential mode filtering of AC power supply to suppress mid to high frequency interference2. The first level common mode filter is composed of X2 capacitors and common mode inductors to form a common mode filter.3. Three stage common mode filtering, due to the use of twostage (also known as twostage) filtering, has a better effect on filtering noise. It can effectively suppress the problem of rapid transient group pulse interference with a repetition frequency of several thousand hertz in certain user sites.4. The threelevel composite (1level differential mode+2level common mode) electromagnetic interference filter circuit, due to the use of threelevel (also known as threelevel) filtering, has a better filtering effect on noise.5. It can effectively suppress the problem of rapid transient group pulse interference with a repetition frequency of several thousand hertz in certain user sites.6.This module, when used in conjunction with a decoder or power amplifier, can filter the DC component of the power supply, and suppress transformer buzzing, highfrequency noise in the power supply, purify the power supply, significantly improve the sound quality of the power amplifier, enhance resolution, and make the background quiet.7.The input GND needs to be connected to the ground wire of the power cord, and can also be connected to the chassis casing, depending on the specific situation.Parameters:Name: Level 3 audio amplifier power filter.Input voltage: singlephase AC 110250VOutput voltage: singlephase AC 110250VRated current of load: 4AInput port: 3wire 7.62 socket inputOutput port: 2wire 7.62 socket outputColour:blackMaterial:PCB+ComponentsDue to different batches, there may be differences in product appearance and printed text, which not affect usePackage Contents:1 * Power FilterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.