The JAM Pedals "Feline" Red Muck mk.2 is a fuzz/distortion pedal built around a Muff-inspired voice. JAM describes the circuit as combining early Triangle and later Red Army/Civil War Big Muff influences, covering singing sustain, dense saturation and multiple compression levels1. It sits in the fuzz and distortion territory players usually reach a Big Muff for, but adds a footswitchable boost and a clipping toggle of its own.
A Muff-inspired fuzz with a dedicated boost
The Red Muck mk.2 is a Muff-style fuzz, but the mk.2 format adds two things the classic circuit does not have: a second footswitch and a clipping toggle. The left footswitch engages a separately tuned boost section placed before the fuzz, with an internal trimmer setting its level, so you can preset how hard the fuzz is pushed and bring it in from the floor1. The right footswitch engages the main effect1.
The toggle selects symmetrical clipping, which JAM says matches the Red Muck mk.1, or asymmetrical clipping for a different response and harmonic texture1. In practical terms, the mk.2 can be set to sound like the earlier pedal or switched into a second voicing.
Sonic Youth's Lee Ranaldo is quoted on JAM's page: "The Red Muck immediately joined my pedal board. It is a great new favorite!"1
The controls and footswitches
| Control | What it does |
|---|---|
| Gain | Controls saturation1 |
| Tone | Shapes the frequency balance1 |
| Level | Sets output1 |
| Toggle | Selects symmetrical or asymmetrical clipping1 |
| Left footswitch | Engages the boost section before the fuzz1 |
| Right footswitch | Engages the main effect1 |
The Red Muck mk.2 and its custom artwork versions
JAM Pedals sells the same Red Muck mk.2 circuit under several hand-painted artwork names. The maker's custom artwork versions include the "Lunar Muck" Red Muck mk.2, "Achenbach" Red Muck, "Noufaro" Red Muck mk.2, "Relic" Red Muck and "White Mountaintops" Red Muck mk.2, all described as the same sound with different artwork12. The Red Muck mk.2 pages for the Lunar Muck, Noufaro and White Mountaintops versions each list the same set of siblings, and the "Relic" Red Muck and "Achenbach" Red Muck sit in the same family345.
Every custom artwork pedal is a one-of-a-kind hand-painted piece. JAM states that the pedal you receive will differ in detail from the photos shown1.
JAM's page also lists a 30-day money-back guarantee, with a refund if products are returned within 30 days of receiving them, and shipping described as DDP with 20% UK VAT and all duties included, no extra charges on delivery1.
Questions
What is the difference between the Red Muck mk.1 and mk.2?
The mk.2 adds a second clipping mode. Its symmetrical clipping setting matches the Red Muck mk.1, while the asymmetrical setting gives a different response and harmonic texture. The mk.2 also adds a left footswitch that engages a separately tuned boost section before the fuzz, with an internal trimmer setting its level.
What does the toggle switch on the Red Muck mk.2 do?
The toggle selects between two clipping modes: symmetrical clipping, which matches the Red Muck mk.1, or asymmetrical clipping for a different response and harmonic texture. It lets one pedal cover two flavors of Muff-style saturation without changing the circuit's basic voice.
Is every Feline Red Muck mk.2 painted the same?
No. Every custom artwork pedal is a one-of-a-kind hand-painted piece, so the pedal you receive will differ in detail from the photos shown. JAM Pedals also offers the same circuit under other artwork names, such as Lunar Muck, Noufaro, White Mountaintops, Achenbach and Relic, all with the same sound and different artwork.
What does the left footswitch do on the Red Muck mk.2?
The left footswitch engages a separately tuned boost section that sits before the fuzz circuit. An internal trimmer sets the boost level, so you can dial it in with a screwdriver and then switch it in and out from the floor. The right footswitch engages the main effect.
Which Big Muff versions inspired the Red Muck mk.2?
JAM Pedals describes the circuit as combining early Triangle and later Red Army/Civil War Big Muff influences, covering singing sustain, dense saturation and multiple compression levels. It is a Muff-inspired fuzz rather than a copy of any single version.
Sources (5)
- "Feline" Red Muck mk.2, JAM Pedals (www.jampedals.com)
- JAM Pedals Red Muck MK2 Fuzz, Delicious Audio, 2026-06-19
- “White Mountaintops” Red Muck mk.2, JAM Pedals (www.jampedals.com)
- "Lunar Muck" Red Muck mk.2, JAM Pedals (www.jampedals.com)
- “Noufaro” Red Muck mk.2, JAM Pedals (www.jampedals.com)
