Wednesday, 11 July 2018

Ethos TWE-1

"Inspired by the Trainwreck Express amplifier (built by the late Ken Fischer), the TWE-1 is solid-state pedal designed to emulate the touch-responsiveness and clean-to-overdriven range you get from a high-grade tube amp. Along with Volume, Hi Cut, and Gain controls, the pedal has 3-position Cab switch (4x12, 2x12, off), a Presence switch that provides three levels of high-frequency boost (post OD), a Voice switch (Traditional and Modern British), and a bypassable Brite switch that provides two levels of high-frequency boost (pre OD).
The TWE-1 with its Gain at noon or higher responded in an amp-like way to changes in guitar volume and picking strength, delivering everything from gritty cleans to richly saturated distortion textures. Thanks to its strong output, the TWE-1 is suitable for clean boosting too. All good stuff, but the standout feature of the TWE-1 is its powerful tone-shaping ability. The Hi-Cut knob attenuates treble when turned clockwise, and the Brite switch makes it easy to get the appropriate sparkle with humbuckers or single-coils. The Cab switch beefs up the low-end significantly in the 4x12 position (I felt the 2x12 setting sounded best with my Deluxe), and the Voice switch lets you choose between a thicker tone in the “M” position or one with more upper-midrange emphasis in the “T” setting. The Presence switch set to Hi restores shimmer when the Hi Cut control is turned up (a cool sound in itself), and between all of these functions, the TWE-1 certainly answers the needs of players who want a compact OD pedal with exceptional sound and flexibility."
The layout should fit in a 125B size box.
You can find Bugg's schematic and easier-to-build pcb on his website here.
This is a buffered effect. Follow the layout to connect the footswitch.

Tuesday, 10 July 2018

DOD FX25 Envelope Filter

Schematic available here.
Added a second layout with Mark Hammer's mods from the DIY forum (here).

Friday, 6 July 2018

GTC Bloody Finger

Original PCB and Schematic available on the PedalPCB website here.
Review and info available here.

Sunday, 1 July 2018

VFE Old School Tremolo

Original Info:
"Our OLD SCHOOL tremolo pedal recalls the luxurious tremolo sounds of vintage tube amps. Derived from a rich sounding, but feature-limited tremolo circuit from the 1960s, we added extra range to both speed & depth controls. But we did not stop there! We added two unique circuits - one to starve the circuit to add grit & chop, and another that can adjust the speed or depth based on your playing dynamics."

You can find Madbean's PDF with schematic here.

Saturday, 9 June 2018

Baja Ampeg SVT Bass Amplifier

Original FSB thread and schematic available here.
I've put the Mid Freq switch components on a separate board to make it easier to box it.

Monday, 28 May 2018

Pigtronix Fat Drive

Original info:
"Pigtronix FAT Drive takes a futuristic analog approach to create complex crunch tones using CMOS clipping and a variable low pass filter for tone shaping. Bringing the tone control all the way clockwise takes this filter completely out of the circuit for total transparency and robust low end. Rolling the tone control back smooths out the highs, leaving ample mid-range bloom and bottom end punch.
A Hi / Lo toggle switch brings additional versatility to the FAT Drive’s wide-ranging palette of overdrive tones, altering the gain structure for enhanced crunch and soaring leads. The FAT Drive features true bypass switching and runs fine on standard 9-volt power but ships with an 18-volt adapter for superior headroom, clarity and overall output"
Schematic available here.

Saturday, 26 May 2018

Bixonic Expandora

An old circuit that was missing from the main page.
There was a layout by Harald Sabro in the forum section but this one should be easier to build.
I've taken the "Bite" control from Codtone's Expandra.
You can remove it by adding a link between Bite 3 and 2.
I've also added two more layouts, one with "Forbidden" mod and "Edge" pot as suggested by Dino and one for the Expandora II.

Thursday, 24 May 2018

Rostex Turbo Metal

I've heard that in 1991 former Lell engineer went on to form a new company called Rostex. At least that's the rumor and i have no other information about the brand or the pedal. You know anything about these (or have a demo clip/video), please do post it in the comment section.

For the layout, in addition to adding series polarity protection and input pulldown, i subbed the output buffer FET to common 2N7000 pinout.

4-knob version:
And the  3-knobbed version:

(Edit 25.5.2018 23:31: fixed a fault with low wiring and added the 3-knob layout
Edit 29.5.2018 20:35: Fixed 3-knob layout that had a misplaced cut on board image)

Wednesday, 23 May 2018

ProCo Solo

From the source:

The SOLO is the newest member of the Pro Co family of stomp boxes. Although it is housed in the same indestructible and road worthy steel enclosure that has come to be a trademark of Pro Co stomp boxes, the SOLO marks a departure from the RAT series of pedals in more ways than just the new cosmetics. With its enormous range of tones, 3 way selectable “hot, melt, & burn” modes, and highly interactive “scoop” and “tone” controls, the SOLO just might be the most versatile pedal in your arsenal.  

Don’t let the name fool you, the 100% analog SOLO is no one trick pony. It is equally at ease in both lead and rhythm capacities, and with a wide variety of amplifiers and guitars. Capable of going from vibey, chewy, warm low gain tones, to deliciously mean and crushing high gain tones, the Solo still remains remarkably true to the sound that matters most: The sound of you and your guitar. And speaking of staying true to the sound of your guitar, true-bypass switching ensures that when the pedal is off, there is no coloration of your sound.  

 Even in its highest gain settings, the SOLO remains extremely tube-like, articulate and touch sensitive. Complex chords ring out with clarity, leads sustain with ease. Roll back your volume knob and it cleans up, just like a good tube amp would.  The solo uses three pairs of carefully matched (or should we say, carefully mismatched) clipping diodes to produce asymmetrical clipping. The three pairs are accessible via the “hot, melt, burn” slider switch. This has the effect of making the SOLO clip very much like a tube amp going into natural power tube distortion.

You'll notice there's plenty of room to add 3 more clipping options if you want to use a 6 position rotary switch.

Sunday, 8 April 2018

FV-1 Pedal

BuGG from has created an EZ FV-1 module for vero layouts.
It is available here:
This is what he wrote about this circuit in our Forum / Requests section (schematic available there):

"This is a fairly straightforward single-algorithm FV-1 circuit, it would be a nice starting point for learning how to work with the FV-1.
For easy stripboard building the PedalPCB EZ FV-1 module is available, a through-hole FV-1 module for stripboard/breadboard layouts.  (ready to use, no SMD soldering required)
The pin spacing is standard 0.1" x 0.6" so it can be handled like a standard PDIP-28 (WIDE) IC.  

The 24LC23A must be loaded with an algorithm in bank 0, although multiple switchable programs are possible by pulling pins 16, 17, and 18 high (corresponding to the binary encoded bank number).
The internal algorithms can also be used by grounding pin 13.
There will be pre-programmed EEPROMs available soon for those who just want to build the thing and not fool around with programming as well."

... and a more "experimental" version:

Saturday, 3 March 2018

Vertex Steel String

Original info:
"The Steel String Clean Drive faithfully recreates the tonality and feel of the iconic Dumble Steel String Singer amplifier in a stompbox format. Designed alongside a real Steel String Singer (#001), this 100% analog tone tool will do it all from Overdrive, to Fat Boost, to Compression, to EQ shaping and more. Get the unmistakable Crystal-Clear Overdrive and Fat Clean Tones from albums like "Texas Flood", "Venus Isle", and "Continuum" through any clean amp platform"
You can find Bugg's PCB and schematic here.

Sunday, 11 February 2018

Deluge Bass Distortion

Spotted this over at General Guitar Gadgets and thought it sounded nice. It's a modified
big muff that supposed to be tuned for bass, and from the clip it sounds pretty nice, but then again how can you go wrong with anything with big muff origins.

Saturday, 10 February 2018

Baja ENG Overdrive

Bajaman's overdrive circuit based on the Engl 530 preamp with switchable tone stack.
Original thread and schematic available on the FSB forum here.
The layout should fit in a 125B box.

09/07/2018 Layout Updated! Inverted Treble and Bass pots' lugs. Changed 390p cap from TL062 pin 5 to 470p. Changed 1K resistor next to 22uF cap to 1K5.
22K resistor between Gain 1 and Gain 3 goes from Gain 1 to 15n/10K 3 rows below instead of Gain 3. 22K above TL062 pin 8 needs to move down one row between 10K/22K and VBias.

Baja MDR Overdrive

Bajaman's overdrive/distortion circuit based on the Mesa Dual Rectifier high gain channel with switchable tone stack.
Original thread and schematic available on the FSB forum here.
The layout should fit in a 1590B box.

Baja Highway 1

Bajaman's overdrive/distortion circuit based on a modified Boss DS-1 with an active high and low tone control section.
Original thread and schematic available on the FSB forum here.
The layout should fit in a 1590B box.

Friday, 9 February 2018

Baja JVM Overdrive

This is based on a Marshall JVM410.
You can find Bajaman's original thread and schematic on the FSB forum here.
There are two versions:
First one with just one toggle switch to select between Cruch, OD1 and OD2.
The second one uses separate footswitches, Gains and Levels.
You need to add an extra pole for LEDs.
Can use any small signal N channel JFet for the buffers (mind the pinout).

Monday, 5 February 2018

Lovepedal Jubilee

Schematic available here.

20/02 Layout updated! Changed the 47nF cap to 4n7 as suggested by Music6000

Saturday, 3 February 2018

Laney Supergroup 100 MkI Preamp

Laney Supergroup 100 MkI

What can I say about the Laney Supergroup. The supergroup was based on the same Fender Bassman architecture just like the Marshall JCM800, Sunn Model T, Mesa Dual Rectifier, and a whole host of other legendary Rock, Hard Rock, and Metal amplifiers. One of the best descriptions I've ever heard of the Supergroup is that it's like a Marshall JCM800 with more balls and gain. It's just an all around badass heavy amp. And for all my lovers of tall things heavy it was used by the legendary Tony Iommi for years, and Laney even went through the trouble of recreating it to reissue it as a special signature amp for Iommi.

Both Channels with a selector switch

Separate Inputs

Both Channels running together (jumping channels)

Treble Channel

Bass Channel

Monday, 29 January 2018

Brunetti Taxi Drive

"Taxi Drive is the Brunetti booster/overdrive. It is endowed with “FET-DIODE” hybrid technology, class A gain structure, to shape the sound in an original and innovative way. These features make Taxi Drive very versatile: you can use it as a simple booster or to obtain a very warm and winding crunch sound, moving easily from bluesy to tweed shades. Thanks to sensitive and very effective controls, you can mould and color the sound as much as you like, respecting the basic and typical qualities of your instrument. Taxi Drive is perfect to boost crunch sounds into lead field or as a stand-alone effect, it gives excellent results in every situation!"
Original FSB thread and schematic available here.

Saturday, 20 January 2018

Jext Telez White Pedal

"A boutique pedal homage to the unique onboard overdrive circuit in vintage solid state Vox Conqueror amps that George Harrison used on the White Album and other Beatles recordings. The White Pedal has four knobs that control volume (overdrive), gain (fuzz), treble cut, and a bass cut knob that acts as a mid-boost, while a fifth knob (the Yoko knob) selects the midrange frequency to boost for a parked wah sound"

Original FSB thread and schematic available here.
Schematic should be correct but it's not verified yet

Thursday, 18 January 2018

Death by Audio Octave Clang

There was already a layout in the forum section but not on the main page.
This version should easily fit in a 1590B box.
Original FSB thread and schematic available here.

Sunday, 14 January 2018

Friedman Buxom Boost

"The Friedman Buxom Boost may be the most powerful tonal solution you ever put on your pedalboard. Like its namesake amp head, this pedal pushes a pure, clean signal to conjure the absolute most from your tone. Turning the boost control is your ticket to volume increase, pushing the front of your amp for thick harmonic overdrive, or balancing between two guitars with varying output. Whether you're after a tone tailored by its active mid, treble, and bass controls or the pedal's ability to achieve total transparency - thanks to its onboard EQ Bypass switch - it's all in there. We've even added a useful tight control for reigning in your tube amp's bottom end when boosted. As expected, every Buxom Boost pedal is crafted with the attention to detail and fine ear for tone that comes with Dave Friedman's name.
Your tone, just more of it. Just like the Friedman Buxom Betty amp head, the Buxom Boost sings with a completely clean tone that makes every nuance of your performance shine though. Simply flip the pedal's onboard EQ Bypass switch and you have a completely transparent signal, adding muscle to your guitar without ever changing its fundamental character.
Tuned for your rig. Though the Buxom Boost can be tonally invisible, its active 3-band EQ and powerful Tight control enables it to be anything but. With a stomp of a switch, you're able to balance the voice and output of two different guitars or push certain frequencies for a solo tone that cuts. With the Buxom Boost's high-quality components, you'll be astounded at how well it works for fine tuning your acoustic-electric guitar's plugged-in voice."
Schematic from Bugg available here.
There are 2 layouts (circuit runs at +/-9V).
The first one with the original bipolar voltage converter.
The second one without it.
You must then add the original or a regular one (not sure of the noise difference)

Saturday, 13 January 2018

ZVex Jonny Octave

Original FSB thread and schematic available here.
Special thanks to Bugg for providing new schematics.

Sunday, 7 January 2018


A different overdrive that uses a Korg Nutube.
If you live in UK you can find them here.
Original project and schematic available here.

The only sample I could find starts at 2:15 (first version without Tone knob)

Monday, 1 January 2018

Vox Distortion Booster V2

Since I just poster the original Vox Distortion Booster, I figured I'd post the second version while i was at it. Just like the V8161 the V2 is also a  Fuzz Face variant. The Vox Distortion Booster V2 is similarly as rare as the V8161, but being a Fuzz Face variant I'm sure we all have an idea of how it will sound.

Vox Distortion Booster V8161

First layout of the new year!! Figured we'd start off right with another classic fuzz. The original Vox Distortion Booster is a Fuzz Face variant unlike the reissue, which there's a layout posted. The Vox Distortion Booster V8161 is stupid rare, so no video clips, but being a Fuzz Face variant I'm sure we all have an idea of how it will sound. The Distortion Booster V8161 was made to be plugged directly into your guitar, similar to other effects of the time period.