Earthquaker Devices Speaker Cranker

Schematic avaiable HERE.

Barber LTD Silver

 Schematic avaiable HERE,

Crazy Tube Starlight

 Per request. Schematic is avaiable HERE.

 

 

Fuzzlord Effects FET 120 Overdrive - transistor version

 Another one traced by evilarsen. A J FET preamp emulator loosely based on Orange OR120.

This one is already verified. 

 

 

 

 

 

 

Lell X-Metal

An old russian Boss MT-2 derivate. The eq section and the general topology is pretty close to the original. But cap and resistor values differs quite a lot in most places and the gain control looks like it is borrowed from a Boss DS1.  

 

 

 

Keeley Java Boost

 

Keeley Katana Boost V1

 With onboard voltage doubler for more headroom.

Schematic and more in HERE.

Mini EVH

Per request. A DIY project posted by Dylan159 at FSB a while back. It is based on Bajaman's EVH OD but tweaked and simplified. Schematic and more info HERE.

Orange Rockreverb Preamp

 

DOD 210 FET Preamp

 Here we have a small one, an old J FET booster. Polarity protection diode and power filter cap has been added and the 22k Drain resistor is replaced with 50k trimpot so we can socket and try out a wide range of J FETs.

Barber Edge Hog

 Schematic, demo and tracing video HERE.

MI Audio Blue Boy Deluxe Overdrive

 Schematic is avaiable HERE.

 

...and by request another layout with with mods by asbestosaurus at FSB.

 

R1 and R2 is the suggested values but they can be tinckered with for more or less overall output.

 

 

Rusty Box

 Based on the preamp of Traynor TS50B, Rusty Box is a big sounding circuit, perfect for bass and baritone guitars. The layout runs on 18v and has an onboard voltage inverter and voltage regulators for 15v/-15v operation. But it might work well on 9v as well but it will probably have more gain (...and less headroom) and some bias tweaking might be necessary.

 

 

 

God City Gradient w. gain ctrl

 Here is a quite simple Booster/Eq/light OD circuit designed by Kurt Ballou. 

More info and schematic HERE.

Deadend Fx Grimmafuzz / Schumann PLL fuzz section

 Schematic and more info is avaiable HERE.

 

 

Schumann Lion

 Modified for normal DC power supply with onboard voltage inverter and voltage regulators.

The layout is based on THIS schematic.

Wampler Black '65

 Schematic is avaiable HERE.

The overkill 470uF power filter cap has been reduced to 100uF and the 10ohm series resistor for the power supply has been replaced with a series polarity protection diode.

Hornby & Skewes Selectatone T.B.2

 A tweaked Rangemaster with switchable output filters. Schematic and more info HERE.

 

 

Hagerman Amplification Metal

 Schematic is avaiable HERE.

Fuzzlord Effects Drone Master

 Here is another trace by evilarsen; Fuzzlord Drone Master.

It is essentially a tweaked Rat with a diode selector switch, a switchable twin T notch filter for a mid scoop a la Superfuzz, and an op amp output buffer.

There is two versions for this (2019 and 2020) and since they differ quite a bit when it comes to some of the component values. The internal trimpot that sets the depth of the mid scoop was only present in some earlier versions but I decided to include it here since it seems to be an useful feature.

Bear in mind that there is quite a volume drop when the switches is in silicon and Scoop mode.

2019 version

 

 

2020 version