I have the latest MacBook Pro (8th generation) and it works flawlessly.
Simply go to "System Settings"> "Audio"> "Output" and then select the connected HDMI device ...
>>> The volume but can no longer be changed via the Mac, but only on the HDMI device (TV).
For cable itself: It feels good to be processed.
This adapter is equal to the same length, but quite a bit more compact than the original Apple adapter - I like that.