Gyrator Wah Wah

Been fashinated by gyrator tonestacks for a while and when I saw this wah circuit by Olivier Jambois I had to give it a go. Sounds very good and powerful and it is loud! Schematic, a nice writeup and soundclips HERE.

Works equally well as a standalone bandpass filter pedal but I recommend to change Wah pot to linear taper since most of the action is at the end of the rotation.

Runoffgroove Mockman V2

Ibanez ST-9 Super Tube Screamer w. Aion "Cirrus mod"

Unverified

One of the better TS variants according most TS lovers. Original had a 20kC dual gang pot for the Mid Boost control and since these are nearly impossible to source this layout has Mid Boost section modified (lifted from Aion Electronics Cirrus project) to use a 100kC dual gang pot which is readily avaiable. 

But if you happen to sit on a 20kC dual gang pot you can swap both 7,5 resistors to 1,5k, 5,6nF cap to 27nF and 12nF cap to 68nF.

More information including schematic HERE

Electrofoods Germ Warfare

Unverified

Death by Audio White Card Fuzz

Now verified. But as with DBA Octave Clang I felt it was lacking in gain. But there is a super simple mod to increase the gain of the LM386 amp. Just omit the cut between pin 1 and pin 8. Now we have both a fat fuzz or way over the top octave fuzz with the gain control dimed. Back it of for sitar tones or overdrive.

Original layout

 

Layout with gain boost mod.

Cornish SS-3 Soft Sustain

*Edit 200914*

New smaller layout.

Schematic is avaiable HERE

Maxon OD 820

Slightly modified power section and a protection diode for the charge pump.

BAJA BE100 Overdrive

Based on the frequency response of Friedman BE100 amplifier. Added the tonestack at the end of the circuit.

Schematic and info HERE

Fuzzhead Fx Foghead

YAFF (Yet Another Fuzz Face) with some addons. After the fuzz section there is a J FET buffer before the tonestack to keep things clear. Tonestack is inspired by Death by Audio Fuzz War V2 but with a bit more focus on the mids. A ge diode acts as a clipper on the treble side which adds some compression and sizzle.

 

BAJA AC30 Normal Channel

EarthQuaker Devices Acapulco Gold w. gain ctrl

Mr Black Tiger Boost

Mad Professor Evolution Orange Underdrive

Thanks to storyboardist for the schematic.

BJFE Sea Blue EQ