Review on 💎 High-Quality Certified HDMI 2.1 Cable - ULT-WIIQ 3.3ft/1M | 48Gbps Ultra 8K HDMI to HDMI Cable : Supports 8K@60Hz, 4K@120Hz, HDR, eARC, Dolby Vision | Compatible with PC, PS5, PS4, Xbox Series X, Roku/Fire/Sony/LG TV by Jerome Turner

eARC is the latest technology for high quality 5.1 and 7.1 surround sound systems for TVs with soundbars, subwoofers and rear speakers. You need cables that support faster technologies for video and high-speed audio. This standard is eARC - 32 times faster data update for HDMI cables over ARC (Audio Return Channel). "E" means Extended, the standard supports much faster data transmission. I have an old system on one of my TVs that supports a Sony 5.1 compression soundbar, subwoofer and remote rear speakers. The new standard supports uncompressed 5.1 and 7.1 surround sound. Right now I'm getting really good connectivity to my new 2021 Sony full matrix TV. It has an eARC HDMI connection but I don't have another speaker system to hook it up to but it works really well when I do connect my Panasonic 4K Blueray player. I can't rate the transfer speed at the moment, but will come back to it in the future when I upgrade to a 7.1 system. At the moment the TV speakers are pretty good and it offers a good quiet cable between the TV and the 4K player. highlighted.