Add Reverb to the western electric circuit

 This mod is here for information purposes only, I do not have a kit to do this mod and I do not offer technical support on how to do it. You will have to be able to figure out how to wedge this into your amp by looking at the diagram and adding the necessary parts. This is the way that I added reverb to my old 30 watt combos. The pre amp is very close to the Marshall pre amp, but there is no reason that this can't be done to a 5F6A type pre amp since they are so close in design. I will say that you should improve the power supply of the 5F6A by adding another filter cap and a 5k or 10k decoupling resistor like the diagram shows.