To me, the best guitar tones come from those circuits, the 50’s Fender circuits and the Marshall ones that were modeled after them.
Fender Bassmans, Deluxe Reverb, Super Reverb, Marshall JTM 45 (based on the Bassman) and 1986 Plexi. Particularly with a Les Paul plugged into them.
Lots of custom amp manufacturers make recreations of these early hand wired amps chasing those tones. And cabinets. One guy - Greg Germino - even went so far as to create a 3D scan and rendering of a late 60’s Marshall cab to make one.
Gibson into Marshall, then Gibson into Fender. The latter the best live touring band on earth.
