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Kingsley Hatchet
Photo: RockBoard
Kingsley

Kingsley Hatchet

PhaserAnalog
Key facts
TypeCustom tube-based phase inverter pedal1
Effect familyPhaser / phase inverter1
CircuitAnalog1
Power9V DC, center negative, 500mA1

The Kingsley Hatchet is a custom tube-based phase inverter pedal, listed under the phaser family of effects. Where most pedals in the phaser category sweep a modulated phase shift across your signal, the Hatchet is built around a different job: it replicates the phase-splitting section of a push-pull tube amplifier. That lets a preamp signal, such as one from a preamp pedal, drive a power amp section with real tube-derived power amp overdrive and harmonic content.1

What it does

In a push-pull tube amplifier, the phase inverter splits the preamp's signal into two halves that the power tubes amplify in opposite phase. The Hatchet reproduces that stage in a pedal, so a player running a preamp pedal into a power amp, or into the return of an amp's effects loop, can get the phase-splitting behavior of a tube amp rather than relying on the power amp's own inverter stage. RockBoard's PedalPedia describes the result as tube-derived power amp overdrive and harmonic content.1

Kingsley says the Hatchet works especially well when paired with Kingsley preamp pedals, where the combination is used to achieve classic Plexi-style distortion and dynamic tube character. In that setup the preamp pedal supplies the gain stages and the Hatchet supplies the phase-splitting stage that feeds the power amp.1

The Hatchet draws 500mA at 9V DC, center negative. That is far more than a typical analog pedal needs, so it calls for a power supply output rated to deliver it.1

Videos

kingsley - Constable (JTM-45)//Kingsley-Hatchet Test
SloppyFingers

Questions

What is the Kingsley Hatchet?

The Kingsley Hatchet is a custom tube-based phase inverter pedal. It is designed to replicate the phase-splitting section of a push-pull tube amplifier, so a preamp signal, such as from a pedal preamp, can drive a power amp section with real tube-derived power amp overdrive and harmonic content.

How is the Hatchet used with other pedals?

Kingsley says the Hatchet works especially well when paired with Kingsley preamp pedals, where it is used to achieve classic Plexi-style distortion and dynamic tube character. A preamp pedal feeds the Hatchet, which then splits the signal the way a tube amp's phase inverter would.

What power does the Kingsley Hatchet need?

The Hatchet runs on 9V DC, center negative, and draws 500mA. Because of that current draw, it needs its own suitable power supply output rather than a low-current outlet shared with several small pedals.

Sources (1)
  1. Hatchet by Kingsley, RockBoard (rockboard.de), 2026