Although the grounding wire on the phono signal cable can eliminate “hum,” it also acts as an antenna. When connected to the metal components in the tonearm, it picks up local high-frequency radiation from switching power supplies, LED lights, Wi-Fi, etc., and then injects it into the grounding layer of the audio system, thereby masking musical details. Chord Company took note of this and utilized their ARAY and common-mode filtering technology to create the first PhonoARAY vinyl grounding system. Its noise reduction performance is exceptional, and after trying it, it is highly likely to become your next purchase target!