KHDK Electronics Korn Indigo Sludge | "Munky" James Shaffer of Korn signature limited edition preamp/fuzz/distortion pedal

creator: KHDK Electronics
model: Korn Indigo Sludge

type: preamp/fuzz/distortion
signal processing: analog

potentiometers: master, gain, volume, distortion, bass, mid, treble, tone, presence
switches: octave, output level (internal)
buttons: preamp true bypass, fuzz/distortion true bypass
input: 1/4” TS
output: 1/4” TS
power input: 9V
current draw: 80 mA

color: silk screenedblack and red
potentiometer knobs: black with silver accents

dimensions: 117mm x 93mm x 56mm
birthplace: Prague, CZ
birthday: November 2025

includes:
- Certificate of Authenticity, signed by Munky
- KHDK Electronics Custom Shop packaging
- Korn Indigo Sludge manual

from KHDK Electronics:

“The sound that shook the 90s. The riffs that made you pick up a guitar. Built to Munky's specs - now in your hands.

NOT JUST A PEDAL. A piece of metal history you can stomp on.

Only 500 red-and-black Indigo Sludge pedals exist in the world, each one a tribute to Korn’s raw Indigo Ranch sound that redefined heavy music in the 90s.

This pedal is on pre-order with shipping starting in November. 

Every unit comes with a Certificate of Authenticity personally signed by Munky, putting a piece of metal history in your hands.

"It really takes me back to the days of the Indigo Ranch."
~ Munky

This isn’t just another pedal—it’s the exact preamp that powered Blind and Shoots and Ladders, the two records from the Indigo Ranch era produced by Ross Robinson.

Plug in, hit that first riff, and feel the same electricity that started a revolution.

The Indigo Sludge Preamp + Fuzz isn’t just another distortion box — it’s a faithful recreation of the exact tonal DNA that shaped Korn’s first two records.

Here’s what makes it special:

Preamp Section – Modeled on the high-gain preamp stages from the original Indigo Ranch rigs, delivering the tight, saturated crunch that defined Munky & Head’s 7-string riffing.

Fuzz Circuit – Inspired by the heavily modded fuzz pedals used during the ’94–’96 sessions. Adds woolly, sustain-drenched chaos for walls of sound or psychedelic breakdowns.

Octave Switch – Engage an extra low octave for even more gut-rattling depth — perfect for downtuned chugs and subterranean riffs.

Full EQ & Presence – Independent Bass, Mid, Treble, Gain, Volume, and Presence controls give you total command of your tone, whether you want tight low-end punch or a more open, sludgy roar.

Independent Fuzz Controls – Dedicated Gain, Volume, and Tone dials let you blend just the right amount of fuzz into the preamp drive for layered intensity.

Stage & Studio Ready – True bypass, 9V power, and a road-ready chassis built to survive the chaos of live shows.

This isn’t “inspired by” Korn’s tone. It’s built on the same ingredients that forged it.”

stock photos provided by KHDK Electronics.