The Haggtronix Crvptkeeper is an analog distortion pedal described by its maker as a "straight forward classic British distortion", the style of overdrive associated with British amplifier circuits. It sits in the distortion family, alongside overdrive and fuzz, and is aimed at players who want that kind of grit from a simple pedal.1
What it does
The Crvptkeeper keeps its control set small. On the outside there are three knobs, and a fourth control is hidden inside the enclosure1:
- Level sets the output volume of the pedal1.
- Hi-Cut rolls off high frequencies, letting the player tame brightness in the distorted tone1.
- Gain sets how much distortion the circuit produces1.
- Presence is set with an internal trim pot, a small adjustment screw inside the pedal rather than a top-panel knob1.
The maker's own description is: "Straight forward classic British distortion featuring Level, Hi-Cut ,and Gain with internal trim pot for Presence contro"1
An internal trim pot means the Presence is set once to taste with a small screwdriver, then left alone. It suits a player who dials in a sound and keeps the pedal's top surface clean, rather than one who adjusts every parameter between songs.
Power
The Crvptkeeper runs on 9V DC, center negative, the standard polarity used by most pedalboard power supplies.1
Videos
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Sources (1)
- Crvptkeeper by Haggtronix, RockBoard PedalPedia, 2026