ARC was introduced as part of the HDMI 1.4b Specification, and allows for the two-way travel of audio data over an HDMI cable to and from a TV. A standard, pre-ARC HDMI port, in contrast ...

In 2017, HDMI 2.1 introduced eARC, which added support for high-end surround sound such as Dolby Atmos and DTS:X. eARC also supports variable refresh rate (VRR), quick media switching (QMS ...

HDMI has evolved over the years, with HDMI 1.4 bringing ARC, or Audio Return Channel, into the mix back in 2009. It's remained in every specification ever since then. ARC enables your TV or audio ...