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Deep Blue Delay

Deep Blue Delay The Deep Blue Delay from Mad Professor is a natural sounding digital/analog delay based on the pt2399 chip. It is is specially designed to work well with distorted tones, but also has some surprisingly clean repeats. This version has an additional switch to allow infinite feedback. Here you'll find the veroboard layout… Read More

Mid-Fi Electronics Clari (not)

Mid-Fi Electronics Clari (not) Based on the noisy PT2399A chip, this crazy pedal from Mid-Fi Electronics is a delay/fuzz/vibrato/modulation/unstable tape simulator/weird noise thingy that brings that cassette lo-fi vibes and strange modulated echoes. This version is modified to include a switch to turn off the fuzz, leaving you with a clean weird noise thing if you… Read More

Fuzz War II

Fuzz War II Based on the classic Big Muff circuit, but with the addition of germanium diodes for aggressive clipping and a more radical tone control, this is the second version of the infamous pedal from Death By Audio. While the first version has 7 transistors and it is much harder to assemble, this one… Read More

4ms Noise Swash

4ms Noise Swash A chaotic random noise maker, self-oscillating fuzz/distortion with power sag, clipping diodes, feedback and overall unpredictable whackiness. Not many components but lots of pots to solder, have a look at the veroboard layout here. Read More

Noise Bomb

Noise Bomb This pedal is a continuation on the Noise Ensemble circuit, taking the pt2399 abuse to a new level. It basically adds controls for delay, delay time, gain and echo, making it even more noisy and weird. Still it is a relatively easy build, find the veroboard layout here. Read More

Korg MS-20 Filter 9v

Korg MS-20 Filter 9v A clone of the infamous MS-20 filter but slightly modified so it can run on 9v. It has low/high pass switch, frequency and resonance pots. Here you'll find more info about this circuit and how to build it. Read More

Sunmachine Sonic Devices Fuzz O)))

Sunmachine Sonic Devices Fuzz O))) According to Dirtbox Layouts, this fuzz pedal is a stock DAM Meathead with an input cap selector switch and a Low control that is basically a Pre Gain control. This is a nice and sort of easy, entry level diy build. You can find the veroboard layout here. Read More

Noise Ensemble

Noise Ensemble With a few components and using the pt2399 chip in an unusual way, Anchovie created this fuzz/delay/modulation/noise pedal that's capable of ""extreme amounts of fuzz, delay, flanger-style sweeps, chorus, wobble and pitchbend effects". View the original thread at DIYstompboxes. I followed the veroboard layout and the mods by Fredrik at Parasit Audio. Read More