JHS Coyote Octave Fuzz: Rare Circuit Reimagined
Rare Moonrock Fuzz circuit reimagined by Josh Scott
5,0 / 5,0 | 
The new Coyote Octave Fuzz from JHS Pedals is their second fuzz effect this year, following the Double Dragon octave. This one is based on a rare design by Glenn S. Wyllie.
Coyote Octave Fuzz
This latest JHS Pedals release, the Coyote Octave Fuzz, is based on a classic, rare fuzz circuit, with just a few modern updates. Almost every octave fuzz pedal you’ve ever played is based on one of three classic circuits: the Octavia, the Super Fuzz, or the Tone Machine.
The Coyote is completely different.
Moonrock
It is an exact replica of the incredibly rare Moonrock Fuzz, created by the late G.S. Wyllie. Wyllie was a reclusive builder from North Carolina who did everything by hand—from sandcasting his own enclosures to etching his own circuit boards. He combined solid electrical engineering with wild experimentation to create a pedal that sounds like nothing else.
What makes it so unique?
Most octave fuzz pedals use a transformer to actually create the octave effect. The Coyote does not.
Wyllie placed the transformer in a completely unexpected part of the circuit. Instead of creating the octave, it acts as an inductor to shape how the fuzz responds. This unconventional design controls the swell, fuzz, and octave character in a way no one else has, giving the pedal a texture and feel you can’t find anywhere else.
Wyllie never mass-produced his designs and continued building pedals right up until he passed away in 2014. The Coyote is our tribute to Glenn and the brilliant, unconventional circuit he left behind. It has a unique control that combines Swell, Fuzz, and Octave into a single knob, along with a standard Volume knob.
Swell / Fuzz / Octave Control
At its lowest point, the control creates a beautiful swelling effect. Notes bloom with a gated, reversed-tape quality, resulting in a slow, breathing attack that rises from silence. This works by allowing the final stage of the circuit to turn on gradually, easing your signal in so the natural volume swell responds directly to your picking dynamics.
As you turn the dial to noon, the sound opens up into a fully realised fuzz. It doesn’t sound like a standard Fuzz Face or Big Muff; instead, it sits firmly in Tone Bender territory. You can expect a rich low end and aggressive mids, delivering a full, powerful fuzz that handles heavy chords beautifully. It is the ideal tone for shoegaze and psychedelic rock.
When cranked fully clockwise, the circuit shifts into an aggressive octave-up sound. It uses intentionally uneven clipping to emphasize even-order harmonics—specifically the second harmonic—pushing it above your base note to create a classic, snarling octave-up growl.
Glenn actually met Hendrix several times in Greenwich Village and was always chasing this specific sound, ultimately capturing it perfectly through his own unique design.
If you like octave fuzz, this unique take on the classic effect could be for you.
Price & Availability
The new JHS Pedals Coyote Octave Fuzz is available to buy at Thomann for €169.
More Information
This might also interest you
