Sound first While 8K and other exciting video / gaming features dominate the headlines on the subject of HDMI, the AudioQuest HDMI cables of the 48 and eARCPriority series are our best-sounding HDMI cables to date. The precision and tighter manufacturing tolerances required to manufacture HDMI cables with a bandwidth of up to 48 Gbps make many of AudioQuest's proven components and techniques more important than ever. 48G The data rate of 48 Gbit / s is made possible by four audio / video pairs, each supporting 12 Gbit / s. eARC Enhanced Audio Return Channel or eARC for short is the next generation of ARC and implemented in the HDMI 2.1 specification. Because sound is so important, eARC gets the same love and attention, excellent metals, and noise dissipation as the main AV data pairs.