Acoustic Research Performance Series digital audio cable is available as optical and coax to meet the widest variety of equipment needs. Performance Series digital optical cable is constructed of high-grade optical fiber, with a highly polished curved lens and gold-plated collar. Performance Series digital audio coaxial cable with RCA connectors provides a quality connection for digital equipment where optical is unavailable or coax is preferred. Oxygen-free solid copper wire, gold-plated connectors and dual shielding provide improved performance.This cable features improved digital sound from corrosion-resistant, gold-plated precision connectors and improved digital sound quality and performance through proper foam dielectric insulation that maintains 75-ohm signal integrity. It provides added strength from flexible, durable PVC jacket, high-quality video signal delivered by solid oxygen-free copper center conductor. 100% Mylar foil and copper braided shields provide its clear, noise-free vibrant sound.