PowerARAY Chord Company PowerARAY is a next-generation noise reduction/absorption device. Akin to the popular GroundARAY units, the PowerARAY can be connected to unused mains power sockets (wall or distribution block) adjacent to those used to power your hi-fi equipment, providing a low-impedance escape route for HF noise, reducing the amount entering a hi-fi system, lowering the noise floor and leaving more space for the music. View the full specs