HDMI ARC (Audio Return Channel) and eARC remove the need for a separate audio cable when sending sound from a TV to a compatible soundbar or AV receiver. For more, see what is HDMI ARC? HDMI eARC ...
Audio Return Channel, or ARC, uses a single HDMI connection to send audio from a TV to the sound bar or AV receiver. In theory, this could simplify your setup, and reduce the number of cables you need ...