Tube sound is not about warmth. It's about correct presentation.

What does 'correct presentation' mean? 

There is timbre presentation, there is all spatial aspects of the presentation , there is the general immersiveness impression ...

Today  nothing of that is reserved to tube amplification or to S.S. amplification...

Each tubes amplifier and each S.S. amplifier is a specific case... Now add to that class D ... And any other variation ...Between integrated or amp and pre-amp...

As larsman just said :

What does 'correct presentation' mean? 

Prejudices are not knowledge...

Regarding perceived tube warmth, isn’t this even order harmonics at play?

Now Bob Carver is a legendary audio component designer...

Dont trust my words listen to him at 16 minutes in this video talking about S.S. done right and tubes amplification...

https://www.youtube.com/watch?v=LQ9USqpclWc&t=2s

By the way Sansui made the same thing emulating perfectly their best tubes amplifier in a S.S. design and they did it EXACTLY as a public test behind veil ... I own one of their best S.S. design in the alpha series ... it sound so good i returned my last upgrade after one hour and it was one of the best tube design in the world...

Synergy matter more than tubes versus S.S. a no more meaningful debate for decades now...

The implementatrion of a design matter more than the material components ...

Next thread!

Many things depend on how you define them and label them. Other than that, watever...