"You are a wise persons and IMHO there are no true real facts where you can argue that tube technology is better than SS to work with real speakers"
Some say some tubes provide more linear gain at various frequencies than transistors. IF so, that would be one benefit of tubes.
Of course no single aspect of either technology tells the whole story.
I would say that as long as amp and speakers are well matched "electronically", good things can happen.
SS amps will tend to perform best with different speaker designs than tube amps. Tube amps will be more challenged to match SS performance with speakers designed for SS use. SS amps may be less challenged "electronically" to drive speakers that work best with tubes, but sound will be different and not like the one the speaker designer probably intended.
Some say some tubes provide more linear gain at various frequencies than transistors. IF so, that would be one benefit of tubes.
Of course no single aspect of either technology tells the whole story.
I would say that as long as amp and speakers are well matched "electronically", good things can happen.
SS amps will tend to perform best with different speaker designs than tube amps. Tube amps will be more challenged to match SS performance with speakers designed for SS use. SS amps may be less challenged "electronically" to drive speakers that work best with tubes, but sound will be different and not like the one the speaker designer probably intended.