Just as a wine connoisseur would be able to detect the value of the $10.00 bottle of wine, and stock up on it, the true and experienced audiophile would be able to detect the value of a cheaper amplifier compared to a much more expensive one; I'll give you a case in point.
I'm going to compare the mighty ARC to a cheaper amp, and I don't use the term "mighty Arc" in jest. As far as resolution it might be considered king, but that, "in my opinion" is at the expense of a tad of "soul". While the Primaluna Monoblocks, with NOS tubes comes close in resolution, but not at the expense of "soul", in the music; they can be tailored to suit the audiophile's taste by careful selection of tubes.
I don't know how, or in which way this comes close to the analogy of the $10. and $90. dollar bottle of wine, but you got my drift, and you can tell me how close this analogy comes, and or how it misses?