An interesting question with no answer. @gruvjet may have nailed it with big bucks v wise choice.
@mapman “Cost and sound… two different things”. Spot on Man…..
My take….
Hi-end does not have a verifiable point or origin for its existence.
Do not let yourself think your system is high-end simply because of a perceived value.
It is a figment of the imagination to put a “value” on it. If you do, you may be just fooling yourself.
The only evaluation that makes any sense is… does it definitely sound better than low-end?
AGAIN A QUESTION.. Who would claim to know where exactly low-end fades into high-end?
Getting into the mid-end debate certainly then clouds the water even more….
Just labelling a piece of equipment as high-end is no guarantee it is. Be very sceptical if this term is offered up by a manufacturer, retailer or Mr. Nextdoor selling his gear.

