Dual filters.
Serial or parallel routing, cutoff sync, topology-aware slopes, digital special models, and cascade drive.
SoundRave presents
A modern VA built to go deep without disappearing into menus.
Four independent synthesis layers, dual filters, direct modulation, and a modular effects chain. ATROPA keeps the full instrument visible while letting a patch become as complex as it needs to be.
01 / Instrument
Sound design stays on the instrument.
OSC, dual filters, envelopes, and performance controls remain visible as one connected surface. Deep functions are there when needed, but they do not replace the main workflow.
02 / Filter + modulation
Detail where it changes the sound.
Two filters per layer, analog and digital families, direct modulation sources, and drag-to-route assignments. The deeper choices stay close to the control they affect.
Global envelope with slope shaping and inversion
03 / Modular EFX
Build an effects chain, not a fixed rack.
Add only the processors a patch needs, bypass them independently, remove them, or change their order. The chain stays visual and directly editable.
Effects are included in ATROPA. The standalone ATROPA FX plug-in is subscriber-only.
Build the chain from the Effect Browser, then add, reorder, bypass, or remove processors directly. Time, modulation, tone, dynamics, and stereo processing share one flexible workflow.
Standalone ATROPA FX requires an active Premium subscription.
Installing it or creating an ATROPA account does not unlock it. All-In Snapshot and individual EFX purchases do not include the standalone ATROPA FX plug-in.
04 / Community
ATROPA in the community.
Independent creators put ATROPA through real-world sessions and share their own sounds, workflows, and perspective.
Community video / Shared with permission
I TRIED THE FREE ATROPA SYNTH AND I'M BLOWN AWAY!
Watch Mack Beats Studio explore ATROPA and build sounds with the free instrument.
Watch on YouTubeATROPA / Access
The core instrument stays free.
ATROPA includes the synthesizer, its factory and user preset workflow, and the launch EFX. The separate ATROPA FX plug-in is available only with an active Premium subscription.
Download for Mac (Apple Silicon) SHA-2567890ad7473484a86541a84f43155f76acfe1c2b72c6b2488d2cc43a0aee09556
Download Presets
SHA-256dea83499ea5d44a752b4176095d62a5f29f2d3bb0604a6a0ba14971145753f5c
Before installing presets
Select the root of your ATROPA user preset folder, not an individual preset pack folder. Files with the same name at the same path will be replaced; unrelated presets and folders will remain. Back up any matching presets you have edited before installing.
Choose your access
ATROPA is free. ATROPA FX is for subscribers.
Creating an account alone does not unlock the standalone ATROPA FX plug-in.
Free
$0No subscription- Core ATROPA synthesizer
- Included EFX inside ATROPA
- Standalone ATROPA FX not included
Premium
$4.99per month- All Premium EFX
- Standalone ATROPA FX while subscribed
- Subscriber Discord (planned)
All-In Snapshot
$19.99one-time- Own every Premium EFX available today
- Use purchased EFX inside ATROPA
- Standalone ATROPA FX not included
System requirements
Minimum
- Mac (Intel): macOS 10.13 High Sierra or later, 64-bit Intel Mac
- Mac (Apple Silicon): macOS 11 Big Sur or later, Apple Silicon Mac
- Windows: Windows 10 64-bit or later, Intel / AMD 64-bit processor
Recommended
A comfortable ATROPA setup.
- Mac: Apple Silicon M1 or later
- Windows: Intel Core 12th Gen or later
- A current 64-bit AU / VST3-compatible host, where applicable
Version history
ATROPA releases.
-
- Remember the selected editor window size and improve fixed-ratio resizing behavior
- Set new Macro modulation assignments to 100% depth instead of 50%
- Replace Limiter soft clipping with stereo-linked peak limiting for cleaner ceiling control
- Fix missing destination oscillator numbers in FM and AM route labels on macOS
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- Fix modulation and preset browser workflows
- Embed factory presets in plugin binaries
-
Release
Development / AI policy
AI assists the work. Responsibility stays human.
ATROPA uses AI-assisted development where it is useful, including code generation, implementation, refactoring, research, and planning. Architecture, DSP decisions, interface hierarchy, debugging, QA, security-sensitive review, and the final decision to ship remain under human responsibility.
Read the Development & AI PolicyHuman-ledArchitecture, DSP, UX, design direction
AI-assistedImplementation, refactoring, research, planning
Human-verifiedDebugging, real-host QA, security review, release