Describe ube sound vs solid state

It appears Mr. Ridley has a handle on just what in general gives tube amps their character...'heat'. And it would stand to reason there's a correlation between output tubes and output transistors 'cookin' at full output.

The Ridley audio amp, like most tube amps runs hot and at 100 Watts 8 Ohms / 90 Watts 4 Ohms, is unlikely to provide linear frequency response through typical loudspeakers.
I haven't heard it, and only auditioning it would be conclusive, but an expensive, moderately powerful, hot running, non-linear amp doesn't sound too exciting to me.
It also raises the question as to whether it's actually a better ss amp or merely a more familiar sounding one to tube enthusiast.
FYI, I haven't been able to remove the Ridley Audio download from my Android.

^update: download removed.

Unsound, just because an amplifier cannot double its power as impedance is cut in half is not the same thing as saying that the amp cannot do flat bandwidth on a given loudspeaker. There is more to it than that!

^I did say "... through typical speakers.".