The Fender 6G15 reverb unit is – in many ways – a full-blown amp which just happens to drive a reverb tank instead of a speaker. It uses two preamp valves, a power valve and a mains and output transformer, and Mike built just such a reverb unit using Amp Maker parts.
“Finished the build today and I am knocked out by the sound. It is better than digital reverb (I have a good Alesis factory-built unit). I have it running into the PP-18 which is driving a self-built 2×12. This is the best guitar sound I have ever had. “The unit could be much smaller if you were using a smaller tank but the big tank works for me.”