GERMANIUM + SILICON FREQUENCY BOOSTER
The Super Hoffman is a booster with 6 selectable peak frequencies (from deep bass to mid to extreme treble boost)
It has 2 selectable transistors (GE is a NOS germanium transistor for a clean, sweet sound, SI is a modern silicon transistor that sounds more aggressive and amplifies/distorts 4 times more than the GE one).
The +/- switch enables more/less gain and Q sharpness.
Controls interaction enable to obtain every kind of boost (including an original germanium clean boost) and weird crunches.
Like all standard T-pedals, the Super Hoffman is point-to-point made but uses "in air" components mounting instead of board.
This kind of assembly is very old style, typical of early 50's electronics, it's extremely heavy duty and easy to repair/modify.