A japanese boutique Big Muff variant with some bell and whistles. The 1979 switch adds a different stexture and aggression to the distortion. Doping switch is basically and Mid/Scoop tonestack switch. And the Mode switch (which is an internal DIP switch in stock units) toggles between two values for both clipping caps which adds some bass i one postirion. The 33k and 24k series resistors are replaced by one 56k resistor due to lack of space on the board.
Schematic is avaiable HERE.
