Multi-engine chorus plugin
Choroboros
A chorus that eats its own tail
The engines
Five colors. One plugin.
Five engines, each with its own character—from classic to experimental. Normal and HQ modes give you ten algorithms to shape your sound. Right-click Rate for tempo sync, double-click to type exact values, and each engine remembers its own settings.
macOS, Windows, and Linux
Thank you to the Japanese music community for the warm welcome.
「温かく迎えていただき、ありがとうございます。」
(Thank you for the warm welcome.)
Built for workflow
Rate Sync
Right-click Rate for tempo-synced divisions (straight, triplet, dotted).
Type values
Double-click any value label to enter exact numbers.
Engine persistence
Each engine remembers its own settings when you switch.
Feedback
Built-in feedback dialog in the plugin — or submit feedback here.
Per-engine skins
Different visuals per engine—knobs, panels, HQ toggle.
Help & About
Quick access to docs, version info, and known issues.
Audio
| Sample rate | 44.1 kHz – 192 kHz |
| Bit depth | 32-bit float |
| Channels | Stereo (L/R quadrature LFO) |
| Block size | Adapts to host block size |
| Reported latency | 0 samples |
Parameters
| Rate | 0.01 – 20 Hz (LFO speed) |
| Depth | 0 – 100% (engine-specific mapping) |
| Offset | 0 – 180° (LFO phase offset) |
| Width | 0 – 200% (stereo spread) |
| Mix | 0 – 100% (dry/wet) |
| Color | 0 – 100% (per-engine: Green=Bloom, Blue=Focus, Red NQ=saturation, Red HQ=tape tone, Purple=spectral, Black=mod intensity) |
Algorithms by engine
| Engine | NQ | HQ |
|---|---|---|
| Green | Dimension NQ | Dimension HQ |
| Blue | Ensemble NQ | Ensemble HQ |
| Red | BBD emulation | Tape (Hermite, wow/flutter) |
| Purple | Spectral NQ | Spectral HQ |
| Black | Experimental NQ | Experimental HQ |
Extra features
- Rate Sync: Right-click Rate for tempo-synced divisions (straight, triplet, dotted). Syncs to host BPM, capped at 20 Hz.
- Type values: Double-click any value label to enter exact numbers. Enter applies, Escape cancels.
- Engine persistence: Each engine stores its own rate, depth, offset, width, mix, color. Switching engines loads that profile.
- Feedback: Dialog with usage stats, save to file, email with pre-filled body — or submit feedback here.
- Help / About: Docs, known issues, version, company, JUCE info.
- Dev Panel: Click DEV in the top bar to open. Seven tabs: Overview, Modulation, Tone, Engine, Look & Feel, Validation, Settings. Includes an interactive console with 30+ commands, live telemetry, FFT analyzer, LFO scopes, transfer curves, 12 guided tutorials, and per-engine DSP tuning.
- Animated UI: Flip/reflect on value changes. Per-engine visual themes. Smoothed sliders.
Formats & platform
VST3, AU, Standalone, AAX for Pro Tools on macOS (via the signed installer) · JUCE 8 · macOS (Intel + Apple Silicon) · Windows (x64 + x86 + ARM64) · Linux x64.
Contributors
We're looking for contributors—especially if you have experience with plugin development on Windows or Linux. choroboros-open-source
See It in Action
Watch Choroboros in use across different styles and settings.
The Choroboros Multi-Engine Chorus Plugin
Choroboros is a multi-engine chorus plugin designed to give you complete control over modulation. Whether you need the warm vintage character of bucket brigade and tape delay (Red engine), a transparent wide stereo chorus for vocals (Blue engine), or a low-CPU multi-voice ensemble for stacking on bass and synths (Black engine), Choroboros provides the right tool. Built for macOS (AU/VST3), Windows (VST3), and Linux (VST3), it features a live diagnostic Dev Panel to solve common mix issues like mud, phase cancellation, and clipping in real time. The public beta is now closed; the commercial release opens on May 11, 2026.
Frequently Asked Questions
Can I still download the free beta?
No. The public beta closed on May 1, 2026. Free binary releases are no longer public. The open-source code remains available on GitHub for reference and contribution history.
What platforms are supported?
macOS (Intel and Apple Silicon), Windows, and Linux. Available as VST3, AU, and Standalone, with Pro Tools on macOS ready through the signed AAX build in the v2.05 installer.
Why does my Mac block the plugin?
Older beta builds may trigger install or validation questions. If you already downloaded the beta before it closed and need install or rescan steps, see the support section for current guidance.
When is the commercial release?
The commercial Choroboros release opens on May 11, 2026. It is a one-time perpetual license, with purchase handled through Paddle when checkout opens.
What happens to the open-source code?
The source repository stays public. The beta release binaries are no longer public downloads. You can still view the open-source repository.
How do I buy Choroboros?
Watch the pricing page for checkout details as the May 11 commercial release opens.
I found a bug. How do I report it?
Email info@kaizenstrategic.ai with your OS, DAW, steps to reproduce, and engine / settings used.