First I have extremely good hearing (it is a curse not a gift) and second I will never own Apple products, but I know I can hear the difference from CD Rips be it even Flac to 24/48 files and to lesser extent 24/96 (depends on the files/genre).
None of that matters is the actual devices are not very good esp. the actual speakers.
I have read all this so called "limit of human hearing" and same as a gamer I have also read "we cannot see more than 60FPS".
I just do my own thing, but I do not go for snake oil like the earthing boxes and £100's silver cables making it sound better.
I have lived over half a century and I find in general most people, talk a lot of

