Behind every good home cinema setup, there is an HDMI cable – or so the saying goes (sort of). While HDMI cables might not be the most exciting things in an AV system, it's hard to overstate how ...

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 ...

However, most TVs only feature one solitary HDMI port marked with 'ARC', so you'll need to ensure you use that port to connect devices with an HDMI cable, otherwise it won't work properly.

eARC is an HDMI-based connection standard ... of speakers and receivers. But what do they handle, exactly? And is there any special advantage over ARC, which is more universal?

The number of HDMI ports varies by LG TV model. Which HDMI port is ARC on a Samsung TV? On a Samsung TV, you'll see an HDMI port clearly labeled ARC on the back of the TV or One Connect box.