The primary circuit is the SSBS Mini, but I did make some changes along the way like implementing some snippets from the Fairfield Circuitry Barbershop and Benson Preamp. I also added an additional control to the dynamic sag circuit: “Brokenness” that acts sort of like an attack/decay knob. Just like the SSBS Fuck Overdrive, the dynamic sag unit is footswitch bypass-able, meaning the pedal can either be run with the normal power supply or be run with the sag unit activated. I opted against making it momentary activated because (1) it would require an additional SPDT toggle switch that I had difficulty fitting on to the PCB layout and (2) for my style of music/playing, I found myself preferring it to be a “latching” effect versus momentary.
In the future I would like to revisit the PCB layout and implement Incandenza Bypass.
Full disclosure: This will potentially be a commercial product but I have shared enough info on my blog and various forums for any persons to make an educated guess at what I have put together.
Demos: