HDMI ARC is easy to ignore until your sound system acts up. Here's what that port is best used for, and why it matters for modern home theater gear.

Reserving that port for things that actually use it can dramatically improve your entertainment experience.

If you've bought a TV, soundbar, or AV receiver at any point over the last five years or so, there's a good chance it has an HDMI ARC port. The "ARC" in that moniker stands for Audio Return Channel, a ...