@jasonbourne71 The "reference standard" in High End is the same as it has always been: its resemblance to live music as heard in the concert hall. UNAMPLIFIED. It’s not as though that hasn’t always been the standard for, say, TAS. Can’t speak to Stereophile or the other mags, as they rarely referred to the live experience.
So, for those of us who play instruments, whichever component renders instruments and vocalists the way they sound in real life is "the best." And that includes dynamics. Knowing how an instrument sounds (specific brands, too) makes it easier. Unfortunately, many people have never had a music class in their lives, or had to take it in school, so their choices will be based on something other than "live" experiences.
And phonostages are not that hard to identify if someone is familiar with music. The Vendetta, so often referred to in here, had a distinct sound and not for an instant sounded like the phonostage of the Convergent or the Modulus or the Jadis. Their differences were all audible, especially with the Convergent, which had very little sound of its own (except in the midbass).