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I'm building a Mach One overdrive and had a thought. I would like to toggle between two volume pots at the end of the circuit to achieve two different output volume "settings." This is what the output section looks like, pretty simple: Could swapping between two pots be achieved with an SPDT...

I am planning to build a two-in-one overdrive that runs on an 18v power supply. One circuit is designed to run at 18v, and the other *can* run either 9v or 18v. The circuits I'm using are the Mach 1 (9v or 18v) and the Super '64 (typically a 9v in and a charge pump boosting it to 18v internally...