Thorpyfx Heavy Water Dual Boost MKII
Manufactured in England using high-performance components, the THORPYFX Heavy Water Dual Boost MKII effects pedal is an evolution of the ThorpyFX The Dane, combining two analog boost circuits with individual controls.
On one side is an incredibly transparent Clean Boost; on the other, a more intense boost built around germanium diodes. The Heavy Water Dual Boost MKII offers a wide range of tonal options—it’s equally effective for simply boosting the output level, enhancing clean tones, or enriching the overdrive of your tube amp.
The first circuit is a Clean Boost with high dynamic headroom. You can significantly boost the output level without altering the definition or dynamics of the original signal.
The second circuit has a more pronounced character thanks to a pair of germanium diodes that produce progressive clipping. It generates warm, subtly compressed distortion with plenty of harmonics, a pronounced attack, and remarkable responsiveness.
Both circuits can be activated independently or combined in a cascade. In this configuration, you’ll have access to rich tones, beautiful organic compression, and plenty of harmonic density.
Increasing the Clean Boost level in the Germanium circuit will remind connoisseurs of the characteristic overdrive obtained by pushing a tube power amp.
A British brand founded in 2014 by Adrian Thorpe, a former member of the British Army, Thorpy FX offers high-performance electric guitar pedals equipped with top-of-the-line components (premium 1% metal-film resistors, Panasonic & Wima capacitors, Neutrik jacks, Burr-Brown op-amps, gold-plated PCBs, and waterproof potentiometers). Each effect is handcrafted by Adrian Thorpe himself.
- SKU ThorpyFX FIELDMARSHALLMK2
- Dual boost/overdrive (clean boost / germanium boost)
- For electric guitar & bass
- Compact effects pedal
- Manufactured in England
- 2x independent, stackable boost circuits
- Option to stack both boosts to increase gain and harmonic richness
- Clean Boost with high dynamic headroom derived from the ThorpyFX The Dane
- Booster with germanium diode clipping
- Independent Boost and Lows controls for each circuit
- 2x switches to activate the circuits separately
- Controls: RHS Boost, RHS Lows, LHS Boost, LHS Lows
LHS Boost
- Connectors: see images
- Powered by a 9V battery or optional 9VDC adapter (standard plug, center negative, 24 mA)
- 65 × 125 × 53 mm
- 550 g
- Ref. Euroguitar : 126030

