Some amps never seem to go out of style (Ampeg SVTs, for example), while others that were once ubiquitous have gone the way of Chorus pedals. I’m thinking here of Acoustic, Trace Elliot, Eden, SWR, Sunn and Vox. You could arguably add GK and Markbass to that list as well. But while some basses and effects do come back in style, I can’t think of any examples with regard to amps (B15, maybe?). I’m aware most of the aforementioned brands no longer exist, but that’s never stopped anyone. Why is that, do you think?