Mad Professor Simble Overdrive

MXR Custom Badass '78 Distortion

MXR Custom Badass Modified OD

Maestro MP-1 Phaser

MXR Distortion III

MXR Distortion Plus

Way Huge Purple Platypus

Way Huge Swollen Pickle Mk. II

Roland AG-5 Funny Cat

Slightly modernized version of a the old wierdo Roland AG-5 Funny Cat. Original had discrete op amps and a transistor emitter follower which for this layout has been changed to regular op amps.

It is also modified for true bypass.

Schematic and info HERE

Way Huge Swollen Pickle Mk. I

There hasn't been a Big muff in a while.... Layout of Way Huge Swollen Pickle Mk. 1 with pads for transistors instead of the the transistor array of the original. There is also a switch that has toggles betwen the stock 47nf low pass filter cap in the tonestack which gives a very mid scopped raesponse. The other position has a more flat response with a 3n3nF cap to ground.

Carl Martin Plexi Tone 9v/-9v

Seymour Duncan 805 Overdrive

Way Huge Green Rhino Mk. II

Schematic is avaiable HERE.

Intersound IVP Tube Voice / Aion Isotope

Schematic, info and PCBs HERE

Gorilla TC-35 Tube Cruncher / Aion Positron

Schematic, info and PCBs for sale HERE

The Gristleizer

Quite wild voltage controlled modulation and filter circuit by Roy Gwinn dated back in 1975. The most famous user was probably Chris Carter from Throbbing Gristle.

Some mods have been done for this layout  to make more compact and reduce ticking and hiss which is a common problem. Many thanks should go to mictester from FSB and Fuzzdog.

Original had five LM741 single op amps which is merged into a quad and a dual op amp. The dual op amp is in the audio signal path so low noise devices is used like NE5532 or LM833. The quad op amp handles the LFO and a LM324 is reported to have the lowest noise from ticking.

Other mods includes a higher value of resistor connecting to pin 2 of IC1 for higher input impendance and Level control value is reduced from 100k to 10k.

More info about setting the trimmers, schematics and even more mods at FSB , MusicPCB 
and Fuzzdog Pedal Parts

The layout is verified and working really good although there is still some faint ticking, especially in square wave mode.

 

Mr Black Doom Stick 2

Schematic and PCBs is avaiable at PedalPCB

which also traced this pedal.

Layout is verified by AlexS

Maestro FRB-1 Full Range Booster

With added voltage doubler since original units had two 9v batteries.

Wampler Faux Analog Echo

Keeley Magnetic Echo