The Enduring Audio Fell Runner is a fuzz pedal built as a vintage style silicon fuzz feeding a JFET boost stage. Pedal of the Day, reviewing it in April 2026, describes it as the "Unruly Versatile Fuzz," a pedal that brings a range of sonic options to a pedalboard or studio. Its tones, the review says, "range from super thick and sustaining to broken and ragged fuzz," helped by adjustable bias and a powerful EQ1.
Where the circuit comes from
The original inspiration for the Fell Runner was the stinging mode from the Roland Bee Baa, a fuzz unit from the 1970s2. The boost stage that follows the fuzz is a modified version of the Boss FA-11. So the pedal pairs a 1970s fuzz idea with a boost circuit drawn from an early Boss design, both reworked into one box.
Controls
| Control | What it does |
|---|---|
| Sustain | Runs from mid-high gain fuzztortion up to seriously thick liquid sustain1 |
| Texture | Adjusts the bias of the second transistor stage, from broken and ragged tones at low settings up to full saturation at maximum1 |
| Voice | Adjusts the midrange character, from an extreme midrange scoop at minimum to a more mid forward tone as you turn it up1 |
| Low | Part of the JFET boost circuit, one half of the two band Baxandall tonestack1 |
| High | Part of the JFET boost circuit, the other half of the two band Baxandall tonestack1 |
The Texture control is the bias adjustment for the second transistor stage, which is what lets the fuzz move between ragged, broken tones and full saturation. The Voice control shapes where the mids sit, from scooped to forward, so the fuzz can sit differently in a band mix without changing the gain1.
The boost stage
The JFET boost circuit that comes after the fuzz includes a two band Baxandall tonestack, which allows for both boosting and cutting of frequencies through the Low and High controls1. A Baxandall tonestack is a classic EQ arrangement, familiar from hi-fi and amp tone circuits, that gives cut as well as boost on each band rather than a single sweep.
Pedal of the Day notes that the boost is very loud: "luckily, this boost circuit is SUPER loud, so this is like having an always on clean boost pedal running after your fuzz"1. That means the Fell Runner can be used as a fuzz into a level lift, pushing an amp or simply raising the fuzz above the rest of the board, with the EQ shaping the result.
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Questions
What does the Texture control do on the Fell Runner?
The Texture control adjusts the bias of the second transistor stage in the fuzz circuit. At low settings it produces broken and ragged tones, and as you turn it up the fuzz moves toward full saturation. Pedal of the Day describes the overall range of the pedal, with adjustable bias and a powerful EQ, as running from super thick and sustaining to broken and ragged fuzz.
What does the Voice control do on the Enduring Audio Fell Runner?
The Voice control adjusts the midrange character of the fuzz. At its minimum it gives an extreme midrange scoop, and as you turn it up the tone becomes more mid forward. It works alongside the Sustain control, which runs from mid-high gain fuzztortion up to thick liquid sustain.
Is the Fell Runner based on the Roland Bee Baa?
Pedal of the Day reports that the original inspiration for the Fell Runner was the stinging mode from the Roland Bee Baa, a fuzz unit from the 1970s. The Fell Runner is described as a vintage style silicon fuzz feeding a JFET boost stage, and the boost circuit itself is a modified version of the Boss FA-1.
What is the Baxandall tonestack on the Fell Runner?
The Low and High controls on the Fell Runner are part of the JFET boost circuit that comes after the fuzz. They form a two band Baxandall tonestack, a type of EQ that allows both boosting and cutting of frequencies, so you can shape the low and high end after the fuzz stage.
How loud is the boost on the Fell Runner?
Pedal of the Day calls the boost circuit SUPER loud, saying it is like having an always on clean boost pedal running after your fuzz. The boost is a modified version of the Boss FA-1 and includes the two band Baxandall tonestack for low and high shaping.
Sources (2)
- Enduring Audio Fell Runner Unruly Versatile Fuzz, Pedal of the Day, 2026-04-23
- Zero G IOD Honey Coma Fuzz, Delicious Audio, 2022-08-09
