Frequency response of the BMP Tone stacks

The next figures were made with the Duncan Tone Stack Calculator. The three lines stand for: A. A minimum Tone knob stting; B. A 50% Tone knob setting; C. A maximum Tone knob setting.

Triangle Big Muff Pi

Ramshead Big Muff Pi

1975 Big Muff Pi

1977 Opamp Big Muff Pi (1)

1977 Opamp Big Muff Pi (2)

Green Russian Big Muff Pi

Late model Big Muff Pi

Reissue Big Muff Pi and Little Big Muff Pi

Swollen Pickle Tone Stack

Flat Mids Tone Stack