agreed @kren0006
other factor here is that some speakers with hotter top ends, if they are not torture chamber loads as seen by the driving amps, can sound really lovely with tube amps
proac response speakers were/are a prime example of this... stew tyler voiced them with audio research tube amps for years - and so folks who bought, say, a set of proac response 3.8, then put a run of the mill solid state amp on it, would hear a speaker that was pretty darn edgy, strident and unforgiving.... but then if they swapped in an arc vt100 or a music reference amp, and then tonally, everything would be ’just right’, the imaging would become expansive and enveloping... ahhhhhhhhhh....