FOXX / AION: Tone Machine / Vulcan

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After recently finishing a mojo size / vintage transistor Tone Machine that has been sitting on the bench for way too long, I decided to do a regular layout, as the practicality of some of my other layouts for the Foxx is probably not for everyone (maybe even me in retrospect). So I’ve done a standard … Read more

ELECTRO-HARMONIX: Hot Tubes

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This is the CMOS version of the Electro-Harmonix Hot Tubes from the late seventies.  I used the Aion FX schematic, which has some minor differences to the original.  Smaller Drive pot, as it’s difficult to source pots over 1meg, and some improved power protection and filtering. ELECTRO-HARMONIX HOT TUBES – VERO LAYOUT HOT TUBES VIDEO DEMO

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

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

FOXX: Tone Machine, BE Mods 2026

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Updated Foxx Tone Machine layout on 0.15″ vero.  This was inspired by the Aion mods – if you are unfamiliar with the Aion Vulcan, it’s a Tone Machine with a modded EQ section (which is great) and an additional bypass option on one of the diodes – also a cool addition.  I’ve tweaked a few … Read more

RCA: BA-31C Preamp, Vero Layout (The Balmoral Broadcast)

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The RCA BA-31C would have been found in broadcast consoles of the day (late sixties), as a microphone preamp module.   I think it may have been the starting point for the Hudson Broadcast, as they look quite similar and I’ve heard some references made to RCA.  If it is what they used, I can … Read more