KMA Machines’ Chief Disruptor fuzz adds a host of tone-shaping to a Big Muff circuit | All Things Guitar

KMA Machines has introduced a new fuzz pedal, the Chief Disruptor. It’s a Big Muff-style circuit, although it offers a host of additional control features that build upon the classic three knobs of the Muff.

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The pedal features knobs for both volume and distortion (Master and Disruption respectively). However, in pace of a single tone control is an active two-band EQ section, offering cut or boost for both bass and treble. The midrange also gets a whole portion of the circuit: a secondary footswitch engages either a mid-cut or a mid-boost, with a knob that selects the centre frequency of the adjustment. This centre frequency can also be swept with a footswitch for a fuzz-wah-like effect, or subtle textural shifts.

Atop-boost, engaged with a toggle switch below the Disruption knob, adds some extra harmonic complexity to the top-end. The distortion has three voicings overall: Tight, Vintage and Heavy. Vintage reduces the saturation in favour of a more dynamic sound, Tight focuses the low end, while Heavy ups the saturation for doom-infused results. The clean blend section can be placed either before or after the EQ, and adjusted with a blend control.

Other construction notes include soft-touch relay true-bypass switching, and top-mounted jacks for the input and output. Check the pedal out in KMA Machines’ video below.

The pedal lists for €199. Find out more over at

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