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DeadAstronautFX Skinwalker
Here's a cool original design by DeadAstronaut. It's a cascaded JFET/mu-amp based high gain distortion with a 3-band EQ. Original build doc with schematic found here. Laid out for a 125B enclosure with...
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EQD Bows
Here's Jamie's take on the classic Rangemaster circuit, with a NPN germanium transistor. There's an added toggle to switch between full range and treble input caps. Probably a tight a squeeze in a...
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SRS EQ Exciter
Here's a bit of a rare one for Fuzz Friday. It's essentially a silicon Fuzz Face with an output buffer and a mid scoop tone control. Schematic and rundown of the original here. It should fit in a 1590a...
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Korg DST-1
Here's the correct layout for the Korg DST-1 that I previously laid out based on an unverified schematic. It uses an AN360 audio pre-amplifier chip (you can still get some on eBay), but I haven't found...
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Music Man StingRay Preamp
Had several requests for on-board bass preamps and what better place to start than the original StingRay circuit? Simple 2 band-EQ with low current draw and should be small enough to tuck into the...
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1981 Inventions DRV
There's been a lot of hype about the DRV and it's a very cool pedal from a very cool builder too. At it's heart is a tweaked RAT surrounded by 2 opamp gain stages and buffered bypass, all running on 18...
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Allies Fuzz
Got a request for this one for Fuzz Friday. Designed by Masaru Kubota it's based on Roger Mayer's Axis Fuzz with a fair bit of tweaks. Here's the schematic for reference. I revamped Roger Mayer's Axis...
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Nocenteli Magnalous Lunevibe
Stumbled across this design by Nocenteli on FSB and thought it was cool, so here you go. Mashup of the Tremulous Lune LFO and the audio path from the Magnavibe with a toggle to switch between tremolo...
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Diezel VH4
Gotten a lot of requests for this one and I finally bit the bullet and laid it out. It's the pedal version of the 3rd channel on Diezel's VH4 amplifier with loads of tonal control and tons of gain on...
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Music Man Sabre II Bass Preamp
Lot of requests for this one after I posted the Stingray pre a few weeks ago, so here's the Sabre II. Pretty similar the the Stingray but with a few value differences and extra resistor in the feedback...
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Fuzzrocious Ram the Manparts
Happy Fuzz Friday! Here's the now discontinued Ram the Manparts from Fuzzrocious. It's a 386-based fuzz/distortion with a voltage starve control, gain toggle, and volume control and sounds pretty...
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Music Man Sabre II Guitar Preamp
Apparently the guitar players were feeling left out with the all the old Music Man bass preamps, cuz I got a ton of requests for the Sabre II Guitar pre. So here you go! Nice and small like the others...
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Fulltone OCD V2
The latest iteration of the OCD has quite a few differences from the earlier models. There's an added transistor stage at the output after the volume control, and a JFET buffer that can be toggled for...
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Hermida/Lovepedal Mosferatu (3-knob)
Came across the schematic (here on FSB) for this and thought I'd lay it out. Essentially a Son of Screamer but with MOSFETs and germanium diodes for clippers, a modified gain control and a few value...
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Foxx Select-A-Fuzz
Happy Fuzz Friday, everybody! The Select-A-Fuzz is a pretty interesting fuzz box from Foxx. It has a rotary switch to select the input cap (the larger the cap the fuzzier the effect), followed by a...
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Boss OD-1
This is the precursor to the SD-1 and the TS808. The OD-1 was built by Boss from 1977-1985 and made in 2 versions. Both version are very similar in circuit topology—buffer > gain/soft clipping stage...
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Fulltone OCB
What's the OCB you ask? It's the bypass buffer circuit from the new version of Fulltone's OCD. It allows you to switch between regular true bypass and buffered bypass. There are 2 versions: The first...
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Benson Preamp
This one just traced over on FSB. It's essentially a modified Wampler Plexidrive with an added bass control. Several of the capacitor values are well educated guesses and the resistor just before the...
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Third Man Bumble Buzz
The Bumble Buzz is sold by Third Man Records, Jack White's record store and was designed and built for him by Union Tube & Transistor. It's a modified Kay Fuzz Tone F-1 with 4 silicon diodes in...
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Keeley El Rey Dorado
Here's another Plexi-in-a-box overdrive, this time from the great Robert Keeley. It's a cascaded opamp design running on a bipolar +/-9v supply. The Power Toggle as it's known on the original selects...
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