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

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...

I've been using tubes for so long I forget what a solid state amp sounds like. 

I used a good S.S. amplifier so long i forgot my two unsuccessful adventures in tube amplifiers...

Synergy matter more than prejudices...

Tubes sound better, (especially linear triode tubes) because they have less distortion than bipolar transistors or FETs. They might not have less distortion in circuit, but transistors need some kind of feedback and triode tubes do not. I also think the size of the device has something to do with it, I have noticed that larger tubes in preamps sound better to my ear than smaller devices, tubes included. This may have something to do with microphonics, the old globe style triodes sound better than coke bottle tubes of the same manufacturers.