Pedal is clean and in perfect working order. Pedal only, no box.

What is it? I took the Solaris pcb (a deluxe germanium Fuzz Face circuit from Aion FX), and added a few extras, according to my own needs/wants as a guitar player:

• A second footswitch for a preset. This allows you to switch between two different fuzz sounds (set with two "Input" knobs, which act like guitar volume knob cleanup when turned down).
• A germanium boost. A germanium Rangemaster style boost, modified to be a full range boost rather than a treble booster. It allows you to get some more extreme fuzz sounds, similar to playing a fuzz face through a cranked amp.
• An external bias. This alters the character and texture of the fuzz. It’s biased “correctly” at 12 o’ clock, but changing it allows you to get those more gritty or gated sounds.

I used two carefully selected germanium GT402B transistors (reportedly used for the Analogman BART Sun Face), and a germanium GT308V transistor for the boost. 

Why a preset? Because it’s like two Fuzz Face pedals in one. I’d played (and built) various Fuzz Face style fuzzes, but I’d always felt like I wasn’t using them to their fullest potential. I loved the gritty overdrive sounds, and I loved the huge fuzz sounds. But messing with the guitar’s volume knob in the middle of a song didn’t feel precise or instantaneous enough. The second footswitch solved these problems: Now I can dial in 2 completely different sounds and switch between them.