
Make the first sound count.
Build punchy kicks, snares, hats, and percussion with a fast 3-operator FM engine.
A drum synthesizer and probability-driven sequencer for producers who want fast sound design, evolving grooves, and genuinely surprising results.

The real Probabil FM demo shows the instrument, the sequencer, and the workflow inside a DAW. No mystery box — open the instrument and see the signal move.
Open full demoProbabil FM turns FM synthesis into a playful path from a single sound to a groove that keeps changing under your hands.

Build punchy kicks, snares, hats, and percussion with a fast 3-operator FM engine.

Use probability, division, humanize, and automation to create grooves that keep evolving.

Watch the real demo and follow the synth, sequencer, and DAW workflow from sound to pattern.
Three-operator FM architecture, independent feedback, four noise types, and per-instrument effects for punchy percussion.
Set probability and division per step, then use humanize and automation lanes to keep every pass alive.
Send MIDI, record stereo or individual tracks, and render WAV or AIFF stems at 44.1, 48, or 96 kHz.
Probabil FM — audio plugin for Mac & PC. One-time payment.