Sound first. While 8K and other compelling video/gaming features make the HDMI headlines, AudioQuest’s 48 and eARC-Priority Series HDMI cables are our best-sounding HDMI cables yet.The greater precision and tighter manufacturing tolerances required to deliver HDMI cables that transfer up to 48Gbps bandwidth mean all of AudioQuest’s tried-and-true ingredients and techniques matter every bit as much as ever before.ThunderBird 48 features 10% Silver-Plated Copper conductors and drains that have been direction-controlled for the most efficient dissipation of radio-frequency noise; high-loss graphene is added to the carbon layer, sandwiched between layers of metal around the 4 FRL + eARC pairs, and a "global" high-loss carbon layer is placed around all conductors.