Swapped out the stock speakers and put Webers in.
Turned it up........and turn the guitar volume down.
I think Aspen Pittman put it best in his Tube Amp Book;Since becoming a TGP member in 08, I've went from using a Soldano Hot Rod, to going through many master volume and nmv amps, and had these realizations along the way. Every amp has it's strong point. To find it, you usually need to turn it up.
Also, speakers make a huge difference in sound, kind of like the final, overall eq.
This and Weber speakers for a blackface pro reverbThe single best thing that anybody can do to any amp is to buy some strong NOS preamp tubes....preferably long black plate. They really ARE that much better.....for those of you who haven't tried it out. It's almost like there is a lost art in the tube making process from the 40's and 50's.