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

HUDSON ELECTRONICS: Broadcast, Peach Guitars Version

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This is the Peach Guitars version of the Hudson Broadcast, as traced by V1nce69 and posted on the Guitar FX layout forum.  Others also did work on tracing in this thread, so sorry if I left anyone out.  Lots of great gut shots and a bunch of measured voltages there too. The layout is basically … Read more

UNKNOWN: Parametric EQ / State-Variable Bandpass Filter

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I found this schematic a little while ago and thought I might give it a try, as I’ve been looking to make a single band parametric equaliser, in this case, based on a State-Variable Bandpass Filter.   It’s supposed to be from a Japanese textbook, but I’m not sure of its origin.  It looks remarkably similar to a … Read more