It depends on the type of speaker involved there are speakers that do not work with tube amps at all but a good solid state amp will drive anything out there really well but a speaker that doe work with tubes will sound better on a good tube amp than solid state and will go very loud with the tube amp also.
Tube vs. Solid State Amplifiers
I found this really good link regarding the differences:
https://www.caryaudio.com/2018/06/04/vacuum-tube-vs-solid-state/
I've heard some (who are much more knowledgeable than me) say that a tube amp and solid state amp which are rated at the same output power in practice will not drive a speaker to the same level, that in selecting amplifier power levels, you would get similar results from lower powered tube amps.
I thought it would be interesting to see what those who know much more about this subject would contribute to this discussion.
https://www.caryaudio.com/2018/06/04/vacuum-tube-vs-solid-state/
I've heard some (who are much more knowledgeable than me) say that a tube amp and solid state amp which are rated at the same output power in practice will not drive a speaker to the same level, that in selecting amplifier power levels, you would get similar results from lower powered tube amps.
I thought it would be interesting to see what those who know much more about this subject would contribute to this discussion.