Korg FK-2 Mr. Multi

 Another weird one! A rotary selector selects between a four stage phaser, wah and phaser and wah combined. The latter mode is supposed to be something out of this world. Deadend Fx (who else) have a projects for this beast and as usual, don't hesitate to support these guys by bying some nifty PCBs. They also included some useful mods such a Depth control for the LFO and two trimpots to fine tune the LFO and the sweep of the wah pot. Build docs, schematic and setup guide HERE.

And HERE is the stock schematic.

 

Keio Synthesizer Traveler F-1

 An old, obscure, weird fuzz/wah/filter/noise/volume pedal from Japan dated from the the early 70s. Schematics and more info HERE. Note that a couple of resistor values was is incorrect in the original schematic but it has been corrected for the layout below.

Devi Ever Improbability Drive

 This one was quite a nightmare to draw so I've attached the schematic for anyone who is willing to take a second look.o.O

 

 

 

Devi Ever Hounds Tooth

 

Devi Ever Electric Brown

Devi Ever Ruby

 Found some Devi Ever circuits in a folder that I had forgotten so I guess there will be a small Devi Ever blowout the nextcoming days...

First out is Ruby, a loud and quite tight fuzz which basically is two cascaded Electra distortions (sans diode clippers). It is definitely worth socketing transistors for this one to try out germaniums or darlingtons...

If more low end is desired, you can increase both of the 10nF caps.

3 Verb

 Per a request from Ian. A fairly simple reverb sold as a kit from Musikding in Germany with an adjustable Dwell control across the pins of a Belton 3H brick. 

Schematic is avaiable HERE.

 

 

God City Instruments HM-1

One more layout before x-mas...

Here is a modified Boss DS-1 into a taeaked HM-2 EQ. Should sound pretty wild, eh?

Schematic is avaiable HERE.

 

EarthQuaker Devices Hummingbird V2

 Based on the more recent version of Hummingbird using the more common 2N6027 programmable unijunction transistor. Schematic is avaiable HERE.

Electro Harmonix Freedom Preamp Pedal

 Here we have a rare bird from the early-mid 70s. A tweaked version of the the circuit found in Freedam Preamp amp found its way into some Big Muff enclosures. Original is very pricey and rare. 

The original ran on two 9v batteries for bipolar power supply for the op amp section but I added a bipolar voltage converter so you can use with your normal power supply. A Master control is added at the end of the circuit so you can crank the volume control to achieve overdrive at reasonable levels.  Also, the trimpots value remains unknown but I would shot for 10k...

The facory schematic is avaiable HERE.

 

 

 

Madbean Rump Roast

 Another old request. An old old forgotten madbean circuit which is based on the preamp section of Dr Z Carmen Ghia.

 

DOD FX33 Buzz Box

 This one have been requested a few times. Factory schematic had a few bugs (as with most DODs) so this layout is based on the schematic by Griffin Fx for their Buzz King project.

 

Black Effects Pedals Dry Line Driver

 Another great tracing (and de gooping) work by Tobias. This one is supoosed to be a heavier version of a Colorsound Overdriver with an added "Contour" diode control for more fuzz on tap.

Wyllie Moonrock

 One of the more innovative fuzz designs out there. This is a quite a crazy octave up fuzz in the vein of Octavia and Scrambler with the Offset control dialed up. Roll it back for less octave and a pronounced swell effect.

 

 

Chase Tone Secret Preamp

 Per request.

Schematic is avaiable HERE.

Black Effects Pedals Fuzzawe

 Another trace by Tobias. This one is based on ROG Whisker Biscuit but with larger input, coupling and Miller caps. Also, the tonestack has been modified for a wider range.

Black Effect Pedals Lava Machine

 Tobias from the band Green Orbit have traced a few pedals from a now obsolete producer called Black Effect Pedals. They were producing mostly fuzzes on the heavier end of the scale, suited for doom and stoner toanz.

Lava Machine is based on Univox Unidrive with some tweaks and addons. Two onboard trimpots to tune in bias and the input signal, The gain control affect the negative feedback between the output buffer and input transistor and it has a treble cut tone control. According to Tobias it does boost, overdrive and fuzztone really well by using your guitar volume control.

 

 

Fjord Fuzz Berserk V1

 Another interesting Fjord Fuzz circuit traced by evilarsen. An old school silicon fuzz with a switch that toggles between Fuzz Face/Tonebender Mk. II modes. Also a thickness pot that is a input cap blend control. It may be worth having the internal bias trimmer as an external control...

 

 

 

Darkglass Tone Capsule

 Schematic and BOM avaiable HERE.

Darkglass Duality

 Schematic avaiable HERE.

 

 

Fjord Fuzz Embla V1

 Another one traced by evilarsen. It is supossed to be a good sounding booster/light overdrive/slightly fuzzy overdrive depending on the the switch setting.

 

 

Boss FZ-3 Fuzz

 Recently traced by Aion Fx, schematic and more info avaiable HERE.

Fjord Fuzz Odin V1

 Here is a layout of an one knob octave up fuzzfrom Norway traced by evilarsen.

Nobels PRE-C Preamp+EQ

 Schematic is avaiable HERE.

Ampeg Sub Blaster

 An old request. It is a biggie but I'm sure someone will tackle this anyway *cough, cough...Chris*.;-)

Bluff Chill Devices Ectoverb V1

 Wanna build reverb without a bulky Belton brick? Bluff Chill Ectoverb got you covered. This one is using two PT2399 ICs in series to achieve a quite murky, spacey and lo-fi reverb. Schematic and more info HERE.

Catalinbread Montavillian Echo

 Time to start rolling again...

Here is a discontinued PT2399 based delay from Catalinbread with some filtering I haven't seen anywhere else. Schematic is avaiable HERE.

 

Dunwich DA-120 Overdrive - MOSFET version

 Time for a small break again.

So I think it is time to release beast that I traced with lots of help by evilarsen and built it up a few months ago. It is not a Matamp amp emulator per se, more of a fuzzy overdrive that simulates the sound of a cranked Matamp. It also includes a power amp emulator section and a gyrator boost section at the end of the circuit. Also you can use MAX10044 or ICL7660S for the charge pump if you plan to run it on 9v only which sounds best IMHO.

Ibanez LA Metal LM7

 A quite interesting Rat derivate which is also found the "LA" mode in the newly released PackRat pedal from JHS.

Schematic is avaiable HERE.

Guyatone PS-106 Double Octave

 Chris Stelloh sent me an old handrawn factory(?) schematic of this old glitchy octave down fuzz (once again, thanks Chris!). It is obviusly inspired by MXR Blue Box but several tweaks and mods had been done such a "Normal" control for clean signal and an octave switch. The original schematic was quite a mess so we had to clean it up in order to do a layout. Chris built it up and he eventually verified it. So here it is...an old forgotten. vintage octave down fuzz!

 

 

 

Sobbat DB-2 Drive Breaker

 

 

 

 

Wampler Thirty Something

 Schematic avaiable HERE.

Paul Cochrane Timmy V2

 This one has been requested for some time but since there was no confirmed schematic avaiable I didn't want to pull the trigger. But Aion Fx just uploaded a schematic with their Termina project. It also includes a trimpot which affect the bass response and clipping. Schematic and more info is avaiable HERE. 

Nordland ODR-C

 Schematic and circuit info avaiable HERE.

Schumann F Loop

 Here is a an old, rare and weird one traced by Deadend Fx.

It is a feedback looper that includes both modulation and an active filter sections. If you you don't like the hassle with the offboard wiring this layout requires, Deadend Fx has nifty PCBs for sale.

Schematic and more info HERE.

 

Guyatone PS-024 Distortion H

Guyatone realeased some very interesting, innovative and good sounding circuits in the 80s. Since they are sadly overlooked and quite rare, Deadend Fx decided to trace and release PCBs for some of these gems.

PS024 Distortion H shares some similarities with Boss HM2 but it still differs enough to not qualify as a clone. The most eye catching feature is the 5 band graphic eq at the end of the circuit with its dedicated graphic eq IC which can be found at Ebay and Alliexpress for quite cheap.

Deadend Fx Hive build docs is avaiable HERE.

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