ChugSaw metal distortion (one-knob version) with mids shaping

ChugSaw metal distortion
ChugSaw! All the chainsaw metal chug you need!
ChugSaw is a guitar distortion that gives you that classic Swedish chainsaw sound that many Death'n'Roll and Death metal bands have been using since the 90s.
While it is based on that classic, widely known circuit we tried to simplify things, so we designed this one-knob version with two toggle switches for mids shaping.
- The right toggle switch (2-positions) changes the sharpness of the mids Q-factor. (left=less sharp, right=sharper)
- The left toggle switch (3-positions) offers you three different settings for mids by actually changing the width of the mids spectrum.
Setting both these toggle switches at their rightmost positions gives you the original tone.
- Internally the EQ settings for High and Low are fixed at max.
- The knob on the face of the pedal only affects the output volume.

▹ True Bypass
▹ The circuit is built around the classic RC4558 op amp.
▹ Voltage required: DC 9V [Do not exceed recommended voltage! It may damage the circuit.]
▹ Polarity: Negative tip
▹ Current draw: 15mA
▹ Enclosure dimensions: 122 x 66 x 39.5 mm  [4.8 x 2.6 x 1.57 in]