Digital Optical Audio Connector
A digital optical connection refers to a fiber-optic connection that is used for transferring digital audio signals (such as PCM, Dolby Digital, and DTS) from a source device, such as CD or DVD player and an AV receiver or Surround Sound Preamp/Processor. See also, TOSLINK
For an additional look and explanation, also watch our About.com Video Presentation: What is a Digital Optical Cable?
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Also Known As: Digital Audio Connection, Optical Audio Connection, Digital Fiber Optic Audio Connection, TOSLINK