Belkin Pure AV Digital Optical Audio Cable is a great solution for DTS & Dolby Digital surround sound. Blue Series Digital Optical Audio Cables use superior-grade optical fiber to deliver better clarity & a more natural sound from your digital audio video components. Digital Optical Audio uses polished optical terminations & optical fiber to transfer digital signals through pulsating light. Fiber is immune to all forms of EM / RF interference, providing superior sonic accuracy & a more detailed, natural sound. Ordinary optical cables can compromise your audio performance by using lower-grade, optical-fiber materials, & hot-plate termination of the fiber, rather than polishing. This can result in signal loss that causes poor clarity, loss of definition, & sound that is not truly accurate. Pure AV Blue Series Digital Optical Audio Cables use the highest-quality materials to enhance your digital surround sound experience.