Big Muff Pi

From the vendor

The daddy of thick, meaty fuzz. Everyone needs some Muff in their life.

The new MultiFluff version of the PCB has optional features above and beyond the standard Fluff circuit:

• board-mounted toggle switch for alternative diode clipping on the third gain stage.

• extra pot pads for alternative tone controls with mid-shift.

Kits available for the following versions of this classic:

• 70's (3rd) version

• Green Russian

• Black Russian

• Civil War Russian

• Tall Font Green Russian

• Ram's Head

• Triangle

• Violet Ram's Head

• V3 79#2 (Mascis)

• Creamy Dreamer

• Stoned cleric

• Hoof

• Cloven Hoof

• Elk Sustainer (NPN Version)

• London Low

Most of the above come with the parts to do the tone modification that takes out the scooped mids if that's the kind of thing you'd like to do.

Mascis model doesn't have the tone bypass that was on the original, but a Muff without Muff tone is no Muff at all. Creamy Dreamer doesn't include the ludicrous power filtering of the original.

What's the difference in the above versions? That's a website all to itself, and whaddayaknow? There IS a fantastic resource on all things Big Muff. Check out Kit Rae's Big Muff Pie page.

All versions are available as four-knob with AMZ Presence Control (version 1 or 2) instead of the standard tone circuit. For more info on those have a read of this. If you select Hoof or Cloven Hoof, these already have a tone section that includes a mids shift pot. Please DO NOT select one of the AMZ options when ordering as you'll just be adding extra cost to your order.

If you want to get really tweaky with your fuzzing you can add the optional clipping diodes and switch. If you go for this option we'll include two each of germanium, 1n4001, BAT46 and red LEDs.

All this fuzzy fun in a 1590B enclosure. Fat muff in a skinny body. Sweet.

The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.

If you want the PCB without parts there's a link for that at the bottom of the page.

Partial kit: PCB, all board-mounted components, pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is available as an option with full kits, and will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosures. Please choose appropriate knobs.

Inspired by: Lots of Big Muff Pi variants

Difficulty: Medium

PCB size: 50 x 50mm

Knobs required: 3/4

Enclosure: 1590B

Download the INSTRUCTION PDF