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HDMI ARC and HDMI eARC: everything you need to know | What Hi-Fi?
What is HDMI-eARC/HDMI 2.1 and How Does it Differ from HDMI-ARC? – Klipsch
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What you need to know about HDMI ARC and eARC
HDMI ARC and eARC: What are they, and how do they work? | Digital Trends