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What Is HDMI ARC? | Tom’s Guide

The next time you set up a new TV or connect one of the best soundbars to it, you might notice that one of your HDMI inputs is labeled “ARC.” Though you may not realize it, those three letters indicate one of the best home-theater features — one that can save you money, reduce your cable clutter and simplify your home-theater setup.

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What is HDMI ARC?

The often-overlooked ARC stands for “Audio Return Channel,” and ever since the HDMI 1.4 standard was introduced, ARC has been available on TVs, soundbars and receivers. This protocol offers two-way communication between devices over a single HDMI connection. Essentially, the HDMI ARC port lets you use HDMI as both an input and an audio output.

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