HDMI 2.1 Features Quietly Appear In Some AV Receiver Specs – HD Guru
How to properly connect a TV and a home theater system - Son-Vidéo.com: blog
What you need to know about HDMI ARC and eARC
Ordered and received a ThenAudio SHARC EARC HDMI 2.1 Audio Converter Processor. Happy to confirm it works for taking audio return channel (ARC/ eARC) from TV and let's you input it into any