Hdmi Arc Of Optische Kabel. One area that optical cables can hold a slight advantage over their hdmi counterparts, is in cable length. Web hdmi arc (audio return channel) is a protocol introduced by the people behind hdmi (the hdmi licensing administrator, which if you’re ever curious, have a list.
It supports dolby digital plus, dolby atmos, and up to 7.1 channels of uncompressed audio while digital optical only supports dolby. Web hdmi arc vs optical cable length. Web an hdmi cable runs on a maximum length of 15 meters ( almost 50 feet).