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What Hi-Fi?
What Hi-Fi?
Technology
Andy Madden

Coaxial vs optical vs HDMI: which is the best audio connection to use?

The connections at the rear of a soundbar, including three HDMI sockets, one of which is labelled 'TV ARC'.

While wireless audio is likely our future, cables will almost certainly remain part of our audio and home cinema set-ups for years to come. So it pays to know a thing or two about the different types available to you. You’ve seen the sockets, you probably own at least one audio cable of each kind, but which digital audio connection should you use? What are the pros and cons of each, and which gives you the best AV performance? Allow us to present a brief overview.

If you’ve ever owned a TV, DVD/Blu-ray player, set-top box, soundbar or AV receiver, chances are you’ll have come across either a coaxial, optical or, more recently, an HDMI connection. Those of you with a full-blown surround sound system almost certainly will have... unless an installer has up until this point done it all for you!

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