"The Ultra High-End Speaker."

Here’s an example. In a smaller room it is hard to fault the sound quality of a pair of tiny kef ls50 metas plus a good quality sub. But that is only within their limits which is mainly how loud they can go without distortion.

So for around 3K properly setup in a smaller room you can basically have all there is to have up to say 85-90db SPL or so.

Now some might want to go louder and some may just not care for the sound. But the sound is without question technically very high end.

As the room size gets larger so will the cost of best possible sound. But a pair of $32k Kef Blade metas can do the job in most any room found  in most people’s houses.  

Mahgister-what makes you think you are the only 1 that knows certain things?

For most of us that spend tens of thousands of dollars on gear, don’t you think these same people know how to treat their room? The room is a must to do right first.

A good treated room can cost many thousands of dollars. But the thing is, even if you spend tens of thousands building your room with all the acoustic treatments with the right dimensions, a cheap stereo will still sound cheap.

But this same room will allow your better equipment like the Revels the OP has, to sound their best. It would be foolish to spend thousands on the room if you have cheap equipment, but at the same time, it would be foolish if you didn’t do this if you have good quality equipment, like the Revels.

In a larger scale commercial application the cost of great sound goes way up proportionally beyond anything found in a persons home.

For example:

https://venuesnow.com/las-vegas-sphere-unveils-audio-system/

World’s most advanced!

My point being:  There's a number of super high quality moderately priced speakers out there like mine that perform at such high levels of proficiency and produce such astonishingly superb sound quality that, inch for inch, pound for pound, one has to question the need to spend more.  My beloved Revel Salon 2 speakers are a prime example of that.  Yes, I've heard a number of moderately priced speakers just like mine, where pure sound quality is concerned, can go toe-to-toe with any of the megabuck, ultra high-end, cost no object, speakers costing multiples of their retail price.  Were a lot of the ultra high-end speakers really have a distinct advantage is with their size and "Scale."  Just one mans opinion.       

I have heard a number of rooms built from the ground up as audio rooms with full blown complete room treatment.  Even with such rooms, subjective impression of the rooms vary greatly.  Most of such rooms were, to me, disappointing—too dry and analytical sounding with bleached out harmonics.  
 

The best was a $250,000 room designed by an acoustic architect.  That room did not look like it was treated because most treatment was hidden behind the wall coverings, including the truly giant bass traps in all four corners.  The front wall had a very large convex wood diffusor that looked like room decoration, not treatment.  But, even this room, which I liked, got mixed reviews.  Two of my friends did not like the sound and both are audio professionals.  So much of good sound IS subjective.