As they say, just because I don't know how to cook doesn't mean that I don't know how to eat.
If I hear the difference I hear it. Just because someone has ideas of what I should or should not hear doesn't change this.
Ralph's tone is often egocentric and condescending, and I believe he knows it. I do not question the quality of his amps, by the way, I never did. But I will leave him alone from now on.
So, yes, to state it again - I would not choose Kondo for jazz/rock and I would not choose Rowland, Pass or perhaps even Lamm hybrid for acoustic guitar music. I would choose tube amp. Which one? I don't know, I would listen to them all above certain level. But usually we have to choose just one, along with one pair of speakers, for many different types of music. My current amp is actually better for jazz/rock than acoustic guitar but not bad for anything. And speakers are the other way around ! However, it's a modest system by audiophile standards.
Let's just not simplify and distort things.