Riot ST VCF

Maker	Guru Gara Synth
Type	Stereo OTA low pass filter with a Stereo Space control
Mounting	Mixed
Width	12 HP
License	Proprietary (No licence published)
Difficulty	🧊 Low-count through-hole

Clone of MS-20 style OTA filter core. Full kit with every SMD part factory soldered, so the builder only fits jacks, pots and trimmers. Chip part sizes are not published. Calibration is the harder half and an oscilloscope helps. Also sold assembled and as a 6HP mono Riot VCF.

Documentation

• Assembly instructions
• Bill of materials (BOM)
• Schematic

Links

• Maker page
• Buy: Guru Gara Synth (full DIY kit)

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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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