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Optical audio output for IMAC - Apple Community
https://discussions.apple.com/thread/2044204
My new IMAC 2.66gh 24" is coming. Just wondering if the IMAC can output true bit stream audio signal through the toslink cable. I have a Logitec 5400 THX 5.1 Speaker system support THX, Dolby Digital, DTS hard decode. What I heard from other website saying is IMAC can only output 2.1 channel audio sound through optical.
Apple
https://www.apple.com/search/Belkin-Digital-Optical-Audio-Cable-6-ft.?tab=accessories
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Play high sample rate digital audio on Mac computers ...
https://support.apple.com/en-us/HT202730
To set your Mac to play high sample rate audio: Connect one end of a TOSLINK optical cable to the headphone port on your Mac, and connect the other end to your audio device, such as an AV receiver. Open Audio MIDI Setup, which is in the Utilities folder of your Applications folder. Select your audio device from the list on the left side of the Audio Devices window.
How to replace the missing optical-digital audio output …
https://www.macworld.com/article/230254/how-to-replace-the-missing-optical-digital-audio-output-on-newer-macs.html
Jeff K. has a bone to pick with Apple: I have a great set of speakers that I connected to my old iMac with a optical audio/mini-plug cable through the headphone jack.
What Is the Optical Audio Port, and When Should I Use It?
https://www.howtogeek.com/241828/what-is-the-optical-audio-port-and-when-should-i-use-it/
What Exactly Is Optical Audio? The vast majority of cabling you use for your media centers, personal computers, and audio/visual equipment uses electrical signals. Be it analog or digital, the signal is sent as an electrical impulse over conductive wire. Every cable, from the speaker wire on your 1970s turntable to the HDMI cable on your new ...
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