 Can I run HDMI over CAT6A? When sending HDMI signals over structured cabling, CAT6A is a great choice. Many audiovisual manufacturers have created a specific HDMI transmission, pristed pair cable. The performance of these cables is similar or identical to CAT6A. The shielding found in CAT6A versions is suitable for audiovisual transmission with better protection from interference on the AV signals. In these transmission links, the source equipment converts the HDMI signal into a suitable transmission for the CAT6A cable. The receiving end reverses this conversion from structured cabling back to each HDMI.