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Diamanté Compressor
Stumbled across this one over on the old La Revolution Deux blog. It's a simplified version of the Diamond Compressor, removing the EQ and the blinking LED circuitry. Makes for a much smaller footprint...
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Pigtronix Fat Drive
Here's an interesting one from Pigtronix. It uses a TL072 to push a CD4049, which is followed by another TL072 pushing a Rat-esque tone control. All the gain stages make for natural compression and...
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Parasit Studio 8-Bitar
For Fuzz Friday, here's a really cool design from Parasit Studio:The 8-Bitar is a minimalistic octave down pedal with a 8-bit sound (glitchy and gated square wave fuzz). It's small enough to fit inside...
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DeadAstronaut Black Triangle
Got another take on the bufferless Tube Screamer. DeadAstronaut has added some extra tone shaping options for tone, gain, and clipping. Pretty versatile tones on tap from light drive into heavier...
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Ashbory Bass Preamp
The Ashbory bass was first introduced in 1986 and is/was a half scale (18") fretless travel bass with a piezo pickup and built in preamp. That preamp is essentially a Baxendall tone stack feeding into...
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Sentinel
The Sentinel is a PT2399-based pitch modulator, delay, reverb and drone verb designed by Arnoud Philip (~arph) as part of the DIYSB 10th Anniversary design contest. It's based on the Sewer Pipes...
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Run Off Groove Whisker Biscuit
For Fuzz Friday here's the Run Off Groove Whisker Biscuit–Big Muff meets Bazz Fuss. From the ROG site:The Whisker Biscuit is a hybrid of the Bazz Fuss and the Big Muff Pi. A single Bazz Fuss stage...
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BearFoot FX Emerald Green Distortion Machine
Unique little distortion box from Bjorn. The original uses 1A1200 diodes (which are pretty big), but other (and smaller) silicon diodes can be used. Should fit nicely in a 1590B.
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Way Huge Drive/Geisha Drive
The Geisha Drive (or just called Drive sometimes) was a limited run overdrive from Way Huge and is a great sounding circuit. It uses a quad opamp to form an input buffer stage, gain stage, followed by...
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Soil Slinger and NEWS!
It's a special Fuzz Friday! My fabricated boards came in for the Dirt Transmitter, and I finally got the chance to verify them. So I made a video of the whole build process!Also, what's more exciting...
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MI Audio Blues Pro
Here's a nice little overdrive circuit from MI Audio. This reflects the 2nd version of the Blues Pro, but if you want to make version 1, just jump pads 1 and 2 of each switch respectively. Should fit...
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Feisty Little One Thermal Detonator
It's Fuzz Friday! This one got traced on FSB a while ago and I finally got around to drawing it up. It's a silicon Fuzz Face with bias control, sag control, and switchable feedback loop (oscillation)....
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Nine Volt Nirvana Tape Measure
Found a bunch of Nine Volt Nirvana/Joe Gagan schematics on Fredd Brigg's blog. I'll probably do a few more of them, but first is the Tape Measure boost. Super simple and should easily fit in a 1590A.
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JHS Angry Charlie V3
Here's the newer version of the Angry Charlie with the 3-band EQ. Pretty much the Crunch Box with a 3-band Baxandall tone stack (similar to this) tacked onto the end. Pots are board mounted and it...
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Valve Wizard Jenny Greenteeth
Here's a weird chorus from Valve Wizard based around a PT2399. In Merlin's own words...Chorus is created by passing the signal through a very short delay line, somewhere between about 8ms and 25ms. The...
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The Gruntbox
Got a request for this one and I'm always up for a bass effect. So this week's Fuzz Friday is Mark Hammer's Gruntbox. It's a pretty unique design and a lot of flexibility. More info here. Schematic and...
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Maxon CP101 Compressor
Stumbled across the schematic for this compressor and couldn't find a layout for it. So I drew it up. This follows the original red box version, not the black box reissue. It's an optical compressor...
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DMB Celestial Drive
Here's the 3-knob version of the DMB Pedals Celestial Drive. It's RAT based, but with soft clipping instead of hard, and has pretty wide range of tones on tap. Here's the schematic for reference.
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Mr. Black BB-74x
This is Jack Deville's Marshall-in-a-box emulating a 1974X 18-watt combo amp. Tracing credit goes to Ralf Gottschalk, who has a nice little dual-layer board of this up on OshPark if you don't feel like...
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Roger Mayer Spitfire
For Fuzz Friday here's Roger Mayer's Spitfire. It's pretty similar to the Mongoose, but with a different transistor/IC pair and a few value changes. Apparently it sounds really good on chords and...
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