Well, I've always felt and said that to most people's ears it's nearly impossible to tell a model from a 'real' amp...
BUT...
You can always feel the difference when you're actually playing... a good tube will have a spongy feel that makes the notes feel as though they are just jumping off the strings and out of the speaker... while a model feels more like work when you're playing.
Just my experience... YMMV
BUT...
You can always feel the difference when you're actually playing... a good tube will have a spongy feel that makes the notes feel as though they are just jumping off the strings and out of the speaker... while a model feels more like work when you're playing.
Just my experience... YMMV