A digital optical cable is used to transfer audio or visual data from one source to another. Digital optical cables are typically more expensive than other types of cables. Still, the investment is worth it as they are much more effective at reproducing a signal through the transfer. Optical cables, fitted with Toslink plugs, carry a digital signal and are an alternative to coaxial cables, fitted with RCA plugs. Optical and coaxial connections are the most common type of digital connector alongside USB for digital connections on modern equipment.

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