The Fuzzrocious GreyFly is a fuzz pedal and noise generator in one enclosure, built around a set of springs mounted on top of the pedal and attached to an internal piezo pickup. It is a collaboration between Fuzzrocious Pedals and Electro-Faustus, combining the Electro-Faustus Blackfly, a noise generator that uses springs, with the Fuzzrocious Gray Stache fuzz pedal1.
What the springs do
The springs are the GreyFly's defining feature. They sit on top of the pedal, where you can scrape and flick them to generate all sorts of odd noises, which the internal piezo pickup turns into signal1. The springs can be driven just by plucking them, or you can feed them into the fuzz circuit and drive them through it, so the noise side works on its own without the fuzz engaged1.
"You get to scrape and flick the springs and this can generate all sorts of odd noises. Then you can kick in the Grey Stache fuzz to really get them even more fuzzed out and angry."
The fuzz side and the Mid control
The fuzz half of the pedal comes from Fuzzrocious's Gray Stache, a fuzz pedal in its own right1. The GreyFly adds an adjustable mid-frequency control for the fuzz, intended to make it stand out a bit better, which the reviewer noted might help in a band scenario1. The Gray Stache circuit itself is known for a three-way toggle switch that changes between different diodes and shifts the pedal's mid response, according to MusicRadar's review of that pedal2.
Where it came from
What reviewers said
gearnews.com's reviewer called the GreyFly "an intriguing mix of noise and fuzz retailing at a boutique price," and summed it up this way1:
"It is a neat idea, just one best left to the more adventurous musician/noise terrorist."
For players who want the Gray Stache fuzz without the springs, Fuzzrocious has sold the Gray Stache on its own, listed at $145 in February 2026, and in 2026 combined it with the Heliotropic in a double fuzz pedal3. Other fuzz voicings from the maker include the Demon King and the M.O.T.H.; see the site's fuzz pedal page for the wider category.
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Fuzzrocious Pedals
Questions
What do the springs on the Fuzzrocious GreyFly do?
The springs are mounted on top of the pedal and attached to an internal piezo pickup. Scraping and flicking them generates odd noises, which you can leave clean or feed into the pedal's fuzz circuit to make them fuzzed out and angry.
Can the GreyFly springs be used without the fuzz?
Yes. The springs can be driven just by plucking them on their own, or you can feed them into the fuzz circuit and drive them through it, so the noise side works independently of the fuzz.
Who makes the Fuzzrocious GreyFly?
The GreyFly is a hand-built collaboration between Fuzzrocious Pedals and Electro-Faustus. It combines Electro-Faustus's Blackfly, a spring-based noise generator, with Fuzzrocious's Grey Stache fuzz circuit.
What is the Mid control on the GreyFly for?
The GreyFly has an adjustable mid-frequency control for the fuzz, intended to make the fuzz stand out better in a band mix.
How much does the Fuzzrocious GreyFly cost?
The GreyFly carried an RRP of $300 USD when it was reviewed in 2016. For comparison, Fuzzrocious's Grey Stache fuzz pedal, which forms the fuzz half of the GreyFly, was listed at $145 in February 2026.
Sources (3)
- Fuzzrocious GreyFly guitar pedal: Wonderful or just weird?, www.gearnews.com, 2016-06-29
- Fuzzrocious Grey Stache w/Diode and Momentary Feedback Mods review, MusicRadar, 2018-10-22
- New Pedal: Fuzzrocious Grey Stache/Heliotropic Double Fuzz, Delicious Audio, 2026-02-19
