Since I do everything in the open and in public for anyone to examine (I'm a scientist, not an amp salesman, this is how we do things), I cannot see why.
We're still waiting.
No-
I'm still waiting. Perhaps you can be a bit less myopic about this??
You have accused me of a variety of things that are false. So that has caused me, regrettably, because I made the mistake of taking those accusations personally (since I have a lot of respect for you), to lose trust. I hate that.
As best I can make out, we're waiting for
you. I sent you a CD in good faith what, a year ago?? Until very recently its been crickets except 'thanks for the CD'.
You accused me of no 'evidence' yet you are well aware of tubes still being around, some 65 years after being declared obsolete. That fact alone should tell you that the evidence is all around you.
Did it occur to you to ask tube users why they prefer tubes? I've done exactly that (although usually its volunteered to me) and over 47 years of being in the business one of the top and
very consistent answers is 'solid state is bright and harsh'. Now its a fact this isn't true of all solid state amps, especially newer ones but apparently so many people react that way that its able to keep an industry afloat.
Now I experienced brightness with an solid state amplifier and I've been gaslighted on it. If its really not bright then I'd really like to know what's going on. But instead I get personal attacks.
You might consider also that the tube industry does not rely on high end audio to stay in business. Its the musical instrument industry that does that with its much larger sales volume. Ask a guitar player about why they use tubes and a very common answer has to do with the 'sound' and how its smoother (IOW, not harsh). But you don't need any of that consistent testimony to know something's up. All you
really need as evidence is that tubes are still being made. That's an economic fact.
Again, usually when a succeeding art shows up, the prior art goes away. When this does not happen, in all cases its because the succeeding art did not outperform the prior art. So the prior art continues. We've seen this in two different areas in high end audio - tubes and LPs. Both quite contentious (and for decades) on any website (such as this one).
All this comes under the heading of 'evidence'. Its not
proof. Its one thing for anecdote to be dismissed but this is literally decades of it we're talking about, enough to sustain several industries.
Tube amplifier power has always been expensive, which is why there are horn speakers. I've been telling people for decades that if I could get the sound I want from solid state I'd do it in a heartbeat; I don't like the expense, the heat, the reliability issues of tubes. But I was able to develop a solid state amp that did that and I embraced it- the tube power amps are gone in my system. One thing about the class D that replaced my tube amps is that its distortion vs frequency characteristic is a ruler flat line across the audio band. Oddly, if I say that on this site that is considered 'anecdote' but if I put up a graph its considered a 'measurement' and evidence. Heck, the graph could be faked. So I've come to regard that reaction around here as a bit ridiculous.