The Amp Garage

Fischerman, Forgot to mention, using a PPIMV (even temporary) will allow you to listen to the tone while adjusting drive / volume and will help sort out pre-amp issues. It is easy to hear a change and probe with a scope and see what is going crazy. Similary pots can be used to tune (dump) the signal...

Fischerman, It's late so I'll be brief and post more at a later time. I use a .1 volt peak to peak sine wave signal at 1000 hz for testing. Starting with the 1st stage look at the signal shape, move to the next stage, how does it look? You will notice easily if the top is cut off (V + supply limited...