Coming out of the back of the TV , I have a choice of "optical audio out" or "HDMI ARC" . Does one method have any advantages over the other ? If so , why ?
@saki70 The quality of both cable types plays a role. If you go Optical, then go glass.
I've had good results with both. There are so many variables that it will come down to your trying each one out to hear which you prefer for sound quality.
One difference that may factor in...are possible handshake issues with HDMI ARC / eARC. Sometimes (source and receiver dependant) there are issues.
In addition to what already has been mentioned; HDMI will transmit the greater bit rate width for some protocols, but optical is more galvanically isolated. FYI, some of the better glass cables come from: Lifatec. Wireworld and DH Labs. Perhaps not as critical, there are lots of HDMI cable options, though videophiles seem to like Wireworld
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