optical

Optical input is repeatedly mentioned as a useful fallback for older TVs and as an easy, reliable way to get up and running when HDMI/ARC is inconvenient.

Optical input is repeatedly cited as a dependable connection option and a practical workaround when HDMI ARC behavior is inconsistent, with some sources noting its lower max resolution versus other inputs.

Optical input is available as a legacy fallback, but multiple sources note it limits advanced formats like Dolby Atmos compared with HDMI eARC.

Optical connectivity is typically handled via an adapter for older TVs, but it is generally positioned as a compatibility fallback rather than the best route for Atmos.