Green · Free
Warm acoustic and synth sends
Chorus plugin · Mac and Windows x64 · Version 1.0.5
Choroboros: five chorus engines in one plugin
Great sound doesn't sit still. Classic, modern, vintage BBD and tape, experimental and dense ensemble chorus, with one set of controls. Two engines are free.
macOS: AU, VST3, AAX and standaloneWindows x64: VST3
Buy Choroboros, US$49.99
Secure checkout is handled on the Choroboros sales page.
Try the free edition30-day money-back guarantee: request a refund within 30 days of purchase, for any reason (refund policy). Lifetime updates. One-time price, no subscription.
Free edition: Green and Purple, no time limit, no card or licence key.
Plus applicable taxes, shown at checkout. Checkout and refunds are handled by Paddle.
Hear it
Watch and hear the five engines.
Five distinct chorus voices: warm, wide, vintage, experimental, and dense.
Or try Green and Purple on your own tracks: download the free edition.
Engines
Five prebuilt engines, five characters.
Blue · Full
Clean width on vocals and buses
Red · Full
BBD and tape color with vintage instability
Purple · Free
Strange textures and sound design
Black · Full
Dense ensembles
Free and full
Start free. Unlock everything for US$49.99.
| Feature | Free | Full licence |
|---|---|---|
| Price | US$0, no time limit | US$49.99 one-time, plus applicable taxes shown at checkout |
| Green and Purple engines | Yes | Yes |
| Blue, Red and Black engines | No | Yes |
| Create: build your own engine, import and export | No | Yes |
| 26 artwork designs | Free to download; using them needs Create | Free to download; use them in Create |
| Formats | macOS AU, VST3, AAX and standalone · Windows x64 VST3 | same |
| Card or licence key | Not needed | Licence key by email |
| Updates and support | n/a | Lifetime updates, support and a commercial licence |
| Guarantee | n/a | 30-day money-back guarantee |
Buy Choroboros, US$49.99
Secure checkout is handled on the Choroboros sales page.
Try the free edition30-day money-back guarantee: request a refund within 30 days of purchase, for any reason (refund policy). Lifetime updates. One-time price, no subscription.
Your licence key arrives by email. Activate it with Register inside Choroboros. The Create guide currently documents macOS. Plus applicable taxes, shown at checkout.
Five prebuilt engines. Seventeen cores.
Five voices. One focused instrument.
Two full engines are free. Green and Purple are complete engines inside the same plugin, free with no time limit, card or licence key. Create builds your own chorus engine from 17 sound cores, pairs it with our artwork designs or your own, then exports it or imports engines from others. Create comes with the paid full licence. Warm, modern, vintage BBD and tape, experimental and dense ensemble voices share one set of controls: Rate, Depth, Offset, Width, Color, Mix, plus engine-specific algorithm choice. Activation works offline; signed sharing requires an internet connection.
Ten cores sit inside the prebuilt engines, two per engine, and seven more are in Create: Lagrange 3rd, Lagrange 5th, Cubic, Thiran, BBD, Tape, Phase Warp, Orbit, Flange, Barber Pole, Ensemble, Multi Rate, Granular, Formant, Linear, Stochastic, Phase Vocoder.
- 30-day money-back guarantee
- Lifetime updates
- No subscription
- VST3 / AU / AAX / Standalone
- Create included with the full licence
Version 1.0.5Five prebuilt chorus enginesCreate with the full licenceNo subscription
Apple Silicon + Intel44.1k to 192kVST3AUAAXStandalone
30-day money-back guaranteeSecure checkoutCommercial licence and support included
Get Create with the full licence, US$49.99
Secure checkout is handled on the Choroboros sales page.
30-day money-back guarantee: request a refund within 30 days of purchase, for any reason (refund policy). Lifetime updates. One-time price, no subscription.
Custom artwork
Infinite expression.
Five prebuilt engines, 17 sound cores, and twenty-six custom looks. Build your own engines and artwork packs in Create. Preview the lighting, then download matching backgrounds, knobs, switches and sliders.
All 26 artwork designs are free to download. Using them in Choroboros requires Create, which comes with the paid full licence. The Create guide documents version 1.0.5 on macOS.
Formats and system
Mac and Windows.
Choroboros is available for macOS in AU, VST3, AAX and standalone formats, and for Windows x64 as a signed VST3 installer. Linux is not released yet. Windows AAX and a Windows standalone app are not included. Version 1.0.5. Questions: support@kaizendsp.com.
Beta feedback
From the public beta, in testers' own words.
Swipe or drag to read. 1 / 8
I was blown away with the software altogether. it's good stuff.
Wes PriestBeta tester, FL Studio on WindowsWatch the track Wes made with it This plugin brings life to an otherwise rudimentary effect.
AndyTheHumanBeta tester, Ableton Live on Windows A really good sounding and pleasant to use plugin. I think you've got a winner.
Anonymous beta testerBeta feedback, Pro Tools on Windows The visual design for each chorus engine is awesome, like what you'd see on a boutique stomp box in real life.
PHoTRoNBeta tester, electric guitar on Windows It's really worthwhile having this plugin simply because it is simple to use, versatile and smacks of thought through quality.
john magnerBeta tester, Cubase on macOS Very interesting effect and sound, worth checking out imo
pekbroKVR community member, public beta feedbackRead the KVR forum discussion This is a nice sounding chorus which I will be using in my projects.
Ed Ten EyckBeta tester, Reaper on Windows Lots of options and colours!
ElfenniaBeta tester, Reaper on Windows. Found a usable sound within seconds.
Press
Beta coverage.
These outlets covered the Choroboros public beta. Each card opens the article.
Before you buy
Choroboros questions.
What does the full licence cost?
US$49.99, one time, plus applicable taxes shown at checkout. No subscription. It includes all five engines, Create, lifetime updates and a 30-day money-back guarantee.
What if Choroboros is not right for me?
You can request a refund within 30 days of purchase, for any reason. No questions asked, and no troubleshooting is required. Open a support case or email support@kaizendsp.com with your purchase email and order ID. Paddle, the merchant of record, returns the money to your original payment method. Full details: https://kaizendsp.com/refunds.
Is Choroboros a free chorus plugin?
Green and Purple are free on macOS and Windows x64 VST3 without a payment card or licence key. There is no time limit on the Free edition. A paid licence unlocks Blue, Red, Black and Create, including custom engine building.
Which plugin formats and systems does Choroboros support?
The current commercial release is available for macOS in AU, VST3, AAX and standalone formats. Windows x64 VST3 is available as a signed installer that includes the factory artwork, with a manual ZIP as an alternative; no Windows AAX or standalone app is included. Linux is not released. Check the download page for files and installation instructions.
Is there a free AAX version of Choroboros for Pro Tools?
Yes, on macOS. The Mac installer includes AAX, and the free Green and Purple engines work without a licence key or time limit, so you can use them in Pro Tools on Mac. There is no Windows AAX version.
Why use Choroboros when my DAW already has a chorus?
Your DAW's built-in chorus may be all you need. Choroboros gives you five prebuilt chorus engines built from 17 sound cores in one plugin, with the same controls (Rate, Depth, Offset, Width, Color, Mix and Trim) in every host you use it in: AU, VST3, AAX or standalone on macOS, and VST3 on Windows x64. With the paid full licence, Create lets you build your own engines. You can try it at no cost: Green and Purple are free with no time limit and no card. If you then want Blue, Red, Black and Create, the full licence is a one-time US$49.99 with lifetime updates and a 30-day money-back guarantee.
How do I get my licence after I buy?
Your licence key arrives by email after checkout. Download the Mac or Windows x64 installer, then activate the key with Register inside Choroboros. Activation works offline. The free Green and Purple engines need no key at all.
What is the difference between the five engines and the 17 sound cores?
Choroboros includes five prebuilt engines: Green, Blue, Red, Purple and Black. Each uses two cores, making ten factory cores. Create also includes seven additional cores, for 17 supplied sound cores in total.
Does Choroboros do BBD and tape chorus?
Yes. The Red engine is the vintage voice, built around BBD and tape character with vintage instability. BBD and tape are also available as cores in Create.
Can I build my own chorus engine?
Yes. In Create, choose one or two supplied cores, modify sound recipes and combine them with a supplied artwork pack or your own backgrounds, knobs, switches and sliders. Create is included in the paid edition.
Are the Choroboros artwork designs free?
All 26 artwork designs are free to download. Using them in Choroboros requires Create, which is included with the paid full licence. The free edition (Green and Purple) does not include Create.
Why do some sites list Choroboros 2.05 or 2.0.50?
Those version numbers belong to the free open-source beta, which closed on 30 April 2026. The commercial release started again at 1.0. Version 1.0.5 is the current release. Older beta coverage also describes Windows and Linux builds and a dev panel; the current Windows x64 VST3 release has a signed installer and a manual ZIP alternative, Linux is not released, and Create replaces the dev panel.
Is Choroboros released, or still in presale?
Choroboros is released. The commercial version launched for macOS on 20 September 2026 and the presale has ended. Version 1.0.5 is the current release. Use the Free edition without a time limit or buy a full licence now.
Does the commercial version have the open-source dev panel?
No. The commercial version uses Create for custom engine building. Older open-source and beta articles describe a separate dev panel and earlier platform availability.
Get all five engines and Create.
One-time US$49.99 for Blue, Red, Black and Create, on top of the free Green and Purple.
Buy Choroboros, US$49.99
Secure checkout is handled on the Choroboros sales page.
Try the free edition30-day money-back guarantee: request a refund within 30 days of purchase, for any reason (refund policy). Lifetime updates. One-time price, no subscription.