This is a Germanium Rangemaster style booster paired with a 'Bikini' Muff style all Germanium three transistor Fuzz.
Sweat creamy boost and chewy dynamic fuzz courteousy of selected and matched PNP NOS Germanium transistors.
Boost level and Range controsl to adjust from treble boost to full range boost & Fuzz intensity and Master Volume, three-way clipping switch that varies the feel, compression and texture of the fuzz.
This device pairs old-skool mojo with the modern convenience of an IC Voltage Converter so this positive ground pedal can be run with the same power supply as modern negative ground pedals!
The Boost can be cascaded into the Fuzz for ultra high gain tones and to produce tunable self-oscillation, demo: