MAD PROFESSOR: Stone Grey Distortion

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Another CMOS based distortion, this time from Mad Professor – the Stone Grey Distortion.  Details available on Aion FX, including schematic.   Not that the original uses JFETS acting as diodes for clipping, which means very little if any difference when compared to a regular diode.  If you want to use JFETS, details are in the Aion build … Read more

CORNISH: SS-3 Modded Diode-Compression Opamp

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Details of this project can be found here – as I started with a modded Pete Cornish SS-2 using the Joe Davvisson diode-compression op-amp, and then moved on to this.  Essentially the same as the SS-2, but with the addition of a lo-cut.   After a bit of testing, I’d suggest a C50k for the sustain … Read more

INTERFAX: Harmonic Percolator, Albini Values, 0.15″ Vero Layouts

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Since I’ve been on a bit of a Harmonic Percolator thing lately, I thought I might do some 0.15″ mojo layouts using Albini / Mad Bean Pepper Spray values. Here’s one built by Sean of Spiller Instruments.  Looks great, as do his other builds.  INTERFAX HARMONIC PERCOLATOR, ALBINI VALUES – VERO LAYOUTS

BOSS: Modded DS-1, Diode Compression Opamp

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A somewhat polarising classic – the Boss DS-1, with a slight twist, as this has the Joe Davisson discrete diode-compression opamp onboard instead of an IC. BOSS DS-1 DIODE COMP OPAMP – VERO LAYOUT BOSS DS-1 DIODE COMP OPAMP – WAMPLER STYLE JCM MODS This is what I ended up being happy with on the … Read more

INTERFAX: Harmonic Percolator HP-1, Tag Board Layout

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Haven’t done a tag board build for a while – so here’s a classic.   INTERFAX HARMONIC PERCOLATOR HP-1 – TAGBOARD LAYOUT Being tag board, I’ve used 1/2w resistors and axial caps.  You could use something more practical (smaller), but if that’s what you want to do, I would recommend using a different layout, as this is … Read more

Guyatone PS-024 Distortion H

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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 … Read more