The pedal includes two effects, the right part is a fuzz on three germanium transistors, based on the Tone Bender MK2 circuit, the left is an octafuzz based on the Green Ringer/Tentacle.

Drive is an analogue of the volume knob on a guitar, it changes the level of overdrive from overdrive to a dense fuzz.
Bias - changes the nature of the overdrive from an aggressive, less dynamic drive to a gated, locking fuzz.
High and Low - active tone stack, boosts or cuts low and high frequencies
More - effect volume.
Blend - mixes a clean signal into the analog octave when the octafuzz effect is on.

Both effects can be used together or separately without changing their order (when used together, the octafuzz will always be the first in the chain).
The knobs are soft, the clicks are minimal, they can work in both latch and momentary modes.
When holding both buttons simultaneously, the pedal switches to a mode in which both effects will be turned on by one button. The change in color of the LEDs signals the transition to this mode.
The built-in power inverter allows you to use a standard 9V power supply.

Mind Cult

Cold Dark Haze