DAM Meathead

Info about the original:

The Meathead. Often imitated, never surpassed. Little box, big idea. Caveman style fuzz tones for killing dinosaurs. Crank it up and hit that switch. Ka-pow! The flavour is thick and raw with a throaty woody bark. Optimum clarity and saturation are delivered with a long syrupy sustain at mountainous volumes. The bass to treble response is perfectly balanced for a heavy but dynamic fuzz tone that will project as well as it can saturate. A most excellently low background noise is achieved through careful transistor selection and biasing which further enforces the Meathead's fluid and articulate sonic capabilities.

Control

Just the one. Even through the Meathead has only one control different tones can be achieved. As the Dirt control is increased the signal not only becomes louder but slightly more saturated. Unity with your clean tone will be reached around noon thus giving you a great deal of volume boosting and drive capabilities. Lowering the guitars volume control will make the overall tone fizzier and increase the treble response.
Start out the Dirt control set at noon and increase or decrease as necessary. The greater headroom your amplifier has the greater the amount of volume boost the Meathead will deal out. The Meathead will also respond well to dirty or driven amplifiers. Used like this the Meathead will increase in intensity as the Dirt control is increased.

More compact version:

 
(kit is for the larger layout with an axial filter cap)

MXR Microamp - compact layout

 

Fuzz Face PNP - Tagboard

It's been a while since I've done a tagboard layout and this was a startling omission that someone requested.

Catalinbread Merkin Fuzz

Info about the original:

The Catalinbread Merkin is a fuzz pedal that's just 'rite' for classic sixties fuzz sounds and beyond! Extended and refined from a classic fuzz circuit, this 3 silicon transistor circuit is very textural, varying from blunt to ripping. It's controls are simple, a volume, and a texture knob with huge range, from cleanish blend counter-clockwise to full fuzz as you turn the knob clockwise.

When developing the Merkin, we chose components for sweet yet buzzing tone which still has a very touch sensitive response. The Merkin is also very responsive to your guitar's volume and tone controls so you can spend less time stooped over your pedalboard, and more time actually playing. Along with a slew of sixties fuzz sounds from the Ventures to the Stooges and many points in between, The Merkin Fuzz is able to do octave-up sounds by using your guitar's neck pickup with the tone rolled off. It works great for bass too.

The life-blood of a fuzz is its power supply and the Merkin is no different. Use a carbon battery for warm vintage tone and smooth response. Use an alkaline or 9 volt dc supply for a harder sound, or run on 18 volt DC supply for even more output and an aggressive sound! Volume unity for the Merkin resides around 9:00, which means there's lots of boost on tap.

Updated 20/3/14.  A slightly more compact version:

Clark Gainster

This pedal originally used large Russian Paper-in-Oil capacitors, and so this layout has been done to accommodate those large caps.  If you intend to use smaller caps, then the layout can be easily reduced in size and 3 or 4 of the links can be removed.