Don’t really like the term “High End”, maybe “HiFi or Audiophile” better describes nicer sounding systems. High End is a moving target, what’s high end for me could be completely different for someone else. My listen room has B&W Nautilus system that is high end to me but I know people with Wilson systems that cost double and people with exotic horns set ups that cost 4 times the amount. I personally feel “high end” should be what sounds great to you and fits in your budget. I feel my less expensive set up in the family room with Forte’s is still “hifi or high end”. I prefer “HiFi”. People who claim 10k systems sound better then 100k systems, all I can say is it’s personal preference or whom ever set up the 100k system did a terrible job. My Klipsch Forte system sounds great and a fun live sound but in no way competes with my B&W Nautilus for accuracy, but my 9 year daughter likes the Forte’s better, she says they are dancing speakers. So I feel there’s too much personal preference and personal budget for a generalized term to have a concrete meanings.