Triangle Big Muff Pi
Electro-Harmonix Discontinued Released 2018

Triangle Big Muff Pi

Analog fuzz/distortion/sustainer pedal that reissues the original circa 1969 Version 1 Big Muff Pi circuit in a compact die-cast chassis. Aimed at guitarists wanting a vintage-style, sustaining fuzz tone.

  • Reissue of the original circa 1969 Version 1 Big Muff
  • Analog circuit with true bypass switching
  • Volume, Sustain and Tone controls
  • Effect status LED
  • Runs on 9V battery (included) or optional adapter
  • Die-cast chassis, 4.5 x 2.75 x 2.1 in
Sell one like this

Photos

8

Listings

No listings of this model yet

When someone sells a Triangle Big Muff Pi, the listings and the sales history will show here.

Sell one like this

Description

The Triangle Big Muff Pi is a reissue of the first Big Muff, named after the triangular arrangement of its Volume, Sustain and Tone knobs. It recreates the circa 1969 analog circuit and was introduced in 2018 to mark the company's 50th anniversary. The circuit sits in a small die-cast chassis designed to fit on a pedalboard.

Controls are kept simple. Volume sets the output level, Sustain sets how much sustain and distortion is applied, and Tone sweeps from high treble to deep bass. A footswitch toggles the effect and an LED lights while it is active. Switching is true bypass, and the look and graphics follow the vintage original.

Connections are a 1/4" input and a 1/4" output, with mono audio. The pedal runs on the supplied 9V battery, or optionally from a 9.6VDC 200mA power adapter, which is sold separately. Current draw is 3mA.

Video

Specifications

Brand
Electro-Harmonix
Model
Triangle Big Muff Pi
Category
Effects and pedals

Audio

Circuit
Analog
Bypass
True Bypass
Audio
Mono
Effect type
Fuzz / Distortion / Sustainer

Controls

Volume
Sets the output level
Sustain
Adjusts the amount of sustain and distortion
Tone
Range from high treble to deep bass
Footswitch
Toggles between effect and bypass
Status LED
Lit when the effect is active

Connectivity

Input
1/4" IN jack
Output
1/4" OUT jack

Power

Power supply
9V battery included (optional 9.6VDC-200mA power adapter not included)
Current draw
3mA

Physical

Dimensions (in)
4.5 x 2.75 x 2.1
Chassis
Die-cast

In the box

Battery
9V battery included

General

Year released
2018
UPC
683274012162

Data: ehx.com; photos: Electro-Harmonix product page · updated 2026-10-13 · Found a mistake? Write to us