solid state vs tubes


has anyone compared a tube amp to a solid state amp and discovered that the diffference sonically between them was undetectable. ? if so what was the tube amp and what was the solid state amp ?

the reason for the question is the basic issue of the ability to distinguish a tube amp from a solid state amp.

this is especially interesting if the components were in production during the 90's , 80's or 70's.

if the components are in current production the probability of such aan occurrence might increasea.

why own a tube amp if there exists a solid state amp that sounds indistinguishable from it ?
mrtennis
Mapman, I suspect that in narrow technical terms there might be something to it, but I wonder if it would hold up in broader technical terms. More importantly, I agree with you, that in practice it might not matter.
Unsound,

I think speakers are generally voiced to sound a particular way with certain kinds of amps and vice versa. I suspect tweaking the impedance load in any given case would change the sound and present a better opportunity for the right amp to now deliver better sound. I doubt that in practice though this would always necessarily be the end result. Its all about amp/speaker synergy which can be achieved via many combos, warts and all. Providing a technically better playing field as a higher impedance likely does does not necessarily assure better results.
Mapman, I am not convinced that a higher impedance is a technically better playing field. In fact I believe the opposite to be true.
Maybe.

In general, I believe higher ratios of input impedance on a device downstream to output impedance of the device upstream to always be a good thing, all other things aside.

Of course, in reality you can't just conveniently focus on on e factor and push all others aside, so who knows in any particular case. No one ingredient alone makes for good soup.
my original question has not been answered:

has anyone participated in a "blind" test comparing a solid state amp to a tube amp and been unable to discern the difference between them , say 7 out of 10 times ?