Blackout Effectors Mantra Overdrive

Voodo Lab Superfuzz

Updated layout 200514. Original schematic had a few bugs. Layout corrected with 47pF cap and flipped 2N3907A transistor.

DOD Death Metal Eq

Got a request for this one a while ago. Looks like a more versitale alternative to Boss HM2 eq. original has transistor gyrators but I went with op amps for less space and smaller parts count.

 Here is demo video by MTK comparing them through a Revv G4 clone.

Covid-19 update

Hi there!. Hope everyone is ok out there during these strange times.
Just wanted say that due to covid-19 I got lots to work to do and simply don't have the time and mostly of the time I don't have access to the blog. I will post at least one new layout a week and comments will be answered but within a few days.

Hopefully this thing is getting settled down soon.
Stay safe and take care.
/
Fuzzhead.

Skreddy ? Lady

Anderton Super Tone Control

JHS Haunting Mids V2

Epider Sound Heavy Metal

An old fuzz/distortion from Brazil produced in late 70's to early 80's. Has an interesting gain control which is using diodes to achieve gate and/or cross over distortion.

Catalinbread Varioboost

Catalinbread Naga Viper

Catalinbread Sagrado Poblano Picoso

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.