The Focal ER 1 is a high-performance extension cord designed specifically for amplifiers, offering superior audio quality and connectivity. It is available in various lengths: ER1 at 1 meter, ER3 at 3 meters, ER5 at 5 meters, and EY05 as a 'Y' extension at 0.5 meters. These cables feature an oxygen-free copper (OFC) conductor, which reduces oxidation and enhances high-frequency performance. They are designed with a 'Soft Touch' coating, ensuring flexibility for easier handling and installation in tight spaces. Additionally, the cables have triple shielding that effectively minimizes external interference, ensuring optimal audio signal integrity during transmission. The connection quality is enhanced through a cracked join design that allows for a snug and secure fit in sockets, contributing to overall efficient signal transfer and reduced noise interference.