Vintage Lab Series L5, the first transistorised amp to get close to the warm crunch of an overdriven valve amp. Designed by Robert Moog back in the 70s and used by eg BB King, so it wasn’t a slouch at clean tone either. This one could do with a clean but it’s all there, even the spring reverb. Only thing I’ve noted is the odd crackly pot, usual in something g this age, which goes away after a few turns. And the Lab series plastic grille tag keeps drooping, but an easy fix.