This US NEMA 5-20P format power connector features an exceptional design quality, allowing for the creation of high-end audiophile cables capable of perfect electrical signal transmission. The connector features many of the latest revolutionary technologies developed by Furutech, the world's leading expert in Pure Transmission. After extensive listening sessions and measurements by audiophiles in the Japanese industry, the outer shell of the connector was designed using Stainless Steel and Carbon Fiber. This shell integrates a special damping and an acetal copolymer insulator. The contacts are Rhodium plated and allow a very good conductivity and durability. Solid and design, the FI-52M will allow you to mount resistant, aesthetic and of course extremely powerful cables!