- For transmitting the optical digital audio signal, e.g. from a CD player to an amplifier - High-purity fibre optic cable channel for loss-free transmission of optical signals - Dual protection with double sheathing - High-tech material for reliable signal transmission and optical fibre cable shielding - Crystal Clear Material for the highest data transmission rates - 24-karat hard gold-plated solid metal plugs - Polished optical fibre tip for a snug channel stopper connection - Extra thick dual protection - CCM - Crystal Clear Material - HRA - High Resolution Audio - 30-year warranty