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Belkin's 12-foot PureAV Digital Optical Audio Cable is different from ordinary optical cables. Ordinary optical cables can compromise your audio performance by using lower-grade, optical-fiber materials, and hot-plate termination of the fiber, rather than polishing. This can result in signal loss that causes poor clarity, loss of definition, and sound that is not truly accurate. The ideal solution for movies with Dolby Digital and DTS surround sound, Digital Optical Audio uses polished optical terminations and optical fiber to transfer digital signals through pulsating light in a glass-core conductor. The fiber is immune to all forms of EM/RF interference, providing superior sonic accuracy and a more detailed, natural sound.