Transform your hardware into an expressive polyphonic modular powerhouse. True multi-voice chord sequencing, algorithmic Euclidean rhythms, per-step microtiming, and independent polymeter.
100% reversible. Non-destructive flash. Restore stock factory firmware anytime in 10 seconds.
Everything the community has requested for a decade, delivered cleanly.
| Feature | Stock Factory Firmware | PollyStep BSPP |
|---|---|---|
| Melodic Polyphony | Strictly Monophonic (1 note) | Up to 8-voice chords per step (MIDI/USB) |
| Microtiming & Nudge | Global Swing only | Sub-tick per-step timing nudge |
| Euclidean Rhythm Engine | None | Algorithmic Euclidean generator per track |
| Track Polymeter | Constrained pattern lengths | True independent track step lengths (1–64) |
| Arpeggiator Engine | Not available on BeatStep Pro | Multi-mode octave arpeggiation |
| Software Emulator | None | Cross-platform standalone Rust emulator |
We built the entire PollyStep BSPP engine in Rust. You can test your chord patterns, adjust Euclidean densities, and audition the sequencer directly on your desktop or browser before touching your physical hardware.