Description
DEM-Osc is a free synth from Clay and Kelsy Instruments. Five vintage oscillators — saw, triangle, square, sync, and chip — each raw-sampled from real analog and digital hardware. Stack three at a time through four hand-built convolution spaces, detune them, and let each voice drift into something warm and alive.
Five oscillators. Five wave shapes. Four convolution reverb spaces. 25 handcrafted presets that already sound finished. Key glide, vibrato, mod-wheel routing, and per-voice drift. The whole interface is hand-drawn — every knob. An instrument, not a settings page.
Free today, yours forever. It’s the doorway into our paid Osc Collection, but it’s a full instrument on its own — no crippled demo, no time limit.
- A native synth for your DAW: VST3 and AU
- macOS only, for now
- No Kontakt, no Native Access — download, install, play
Hear it and read more on the DEM-Osc page.

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