Optical audio cables are manufactured out of high grade materials:
1. Optical fibre lines (resists any kind of disturbance signal)
2.
Cable OD: 8mm; Transprent Plastic and Robust braided jacket to protect the sensitive optical fibre lines
3.24K gold-plated contacts (corrosion-resistant)
4. Exactly fitting full metal connector
5. Carbon fiber metal shell
6. High flexibility (prevents from a too high pressure on the optical ports)