Now answer the part you so conveniently snipped (which you often
decry when others do it) "What I am trying to get you to acknowledge
is whether sound is the only possible mechanism for the delivery of
music. Is it or isn't it?"

I said


Definitely not. However that fact is not relevant to the issue of sonic
differences between amps.


OK, sound isn't the only mechanism, nor is it relevant, please go on.



Watching a performance profoundly affects how we hear it. Music was never an
audio only phenomenon before recording and playback. Like I said that fact is
not relevant to the issue of "audible" differences in components.