ChugSaw metal distortion with mids shaping

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 increase its functionality a little bit in this this version with the addition of 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 orginal tone

*** Note: The toggle switches actually shape the mids only when the High potentiometer is set at max. position.

▹ 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]