Feature: 1. [WORK PRINCIPLE] Noise filter actively reduces noise and generates an equal but opposite signal to eliminate background noise in USB audio stream, enhances your audio, helps you enjoy clean and clear sound. 2. [OPTIMIZE SOUND QUALITY] Power noise eliminator reduces jitter and packet errors, provides clear and more beautiful sound, offers you with a better experience. 3. [WIDE COMPATIBILITY] The noise isolator can be connected with the audio playback device with USB3.0 USB2.0 Type C cable and the device with USB3.0 USB2.0 Type C interface. 4. [MULTI USAGE] Audio noise filter supports Type C independent power supply, and is applicable to computer, smart phone, NAS, streaming media or car audio system. 5. [ALUMINUM SHELL] The audio ground loop eliminator is made from high strength aluminum alloy, sturdy and hard, not easy to be damaged. Specification: Item Type: USB Power Noise Filter Material: Aluminum Alloy Rated Voltage: DC5V Power Supply: Support Type C independent power supply Host Device Interface Support: USB3.0 USB2.0 Type C Audio Playback Device Cable Support: USB3.0 USB2.0 Type C cable Principle: While actively eliminating noise, it reduces jitter, which is a kind of digital distortion that will cause data packet error and harsh sound. This problem is solved by eliminating electrical noise from the source, so as to achieve perfect transmission of audio data to DAC. Package List: 3 x USB Power Noise Filter3 x Electric Component1 x User Manual