DIY Eurorack Builds

Formant VCO

Analog VCO derived from the Formant style core · Johansen Engineering

MakerJohansen Engineering
TypeAnalog VCO derived from the Formant style core
MountingMixed
Width
LicenseProprietary (No licence published on this repo)
Difficulty 🔥 SMD (0805)

Clone of Seb Holzapfel's modular synth VCO design. Rev C1 boards were produced and tested. Known erratum: RV7 (FM) is reversed. The repo bundles datasheets for every part used.

Documentation

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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