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How to Hook Up Fiber-Optic Audio Cables:
Fiber-optic audio cables transmit multichannel sound from one electronic component to another using pulsating light. One advantage of fiber-optic audio is that the light signal is unaffected by electromagnetic interference from stereo components, unlike audio cables made with copper wire or other metals.
Each end of the fiber-optic cable has a plastic plug that inserts into an optical audio jack. Connecting the cable usually takes no more than a few seconds.