The old joke about the Hotrod series is that Fender installed a second on/off switch that they mislabeled "volume." At 1, the amp is basically off. At 2, it peels the paint off the walls. To make the amp a little more user friendly and bring the overall gain down we swapped 12AT7s into the first two preamp spots. We also replaced the "volume" and "master volume" pots with 250k audio taper. We replaced the "reverb" pot with 100k linear taper. The end result was a much more mellow tone with a nice warm reverb that you can turn up without sterilizing farm animals at 100 paces.