Opusonix
TL;DR
Opusonix is a collaboration platform for audio producers and engineers that replaces endless email chains with time-stamped annotations on the waveform, A/B mix comparisons, built-in Kanban boards, and client-friendly demo pages — all in one workspace per project.
Key Facts
Free version: Free tier available at $2.99/month (Base) with up to 50 tracks or 10 albums — not a free plan, but the entry tier is low-cost.
Pricing
Starting at $2.99/month
Base
- Up to 50 tracks or 10 albums
- Time-stamped audio annotations on the waveform
- Text and voice feedback on mixes
- A/B mix version comparison
- Browser-based collaboration with client demo pages
- Mobile and desktop compatible demo pages
- Real-time and asynchronous collaboration
Pro
- Everything in Base
- Up to 500 tracks or 100 albums
- All Edu features
- Kanban task management with NLP feedback conversion
- Built-in task lists turning comments into actionable to-dos
- Project spaces with synced notes, files, tasks, and tracks
- Album planner and quick search navigation
Enterprise
- Everything in Pro
- Unlimited tracks and albums
- 200GB data storage
- Priority support
Additional Pricing Information
Subscription SaaS with a desktop app. Tiers: Base $2.99/mo (50 tracks/10 albums), Pro $9.99/mo (500 tracks/100 albums), Enterprise $30/mo (unlimited). Lifetime deal available via StackSocial. No TrustRadius listing.
Details
What is Opusonix?
Opusonix is a collaboration platform built for audio producers, engineers, and the clients they work with. It replaces the typical back-and-forth email chain with time-stamped annotations placed directly on the waveform — so feedback is precise and visual, not vague. You can add text or voice feedback and compare multiple versions of a track side by side with A/B comparison. Built-in Kanban boards and task lists turn comments into actionable to-dos automatically, and every project lives in its own space with synced notes, files, tasks, and tracks. The platform supports both real-time and asynchronous collaboration, and client-friendly demo pages work on mobile and desktop without downloads — so non-technical clients can review mixes without installing anything. Additional tools include an album planner for sequencing and quick search for navigating projects. The subscription starts at $2.99/month for the Base tier (up to 50 tracks or 10 albums), with Pro at $9.99/month (500 tracks/100 albums) and Enterprise at $30/month (unlimited, 200GB). A lifetime deal is available via StackSocial.
Key Features
- *Time-Stamped Waveform Annotations** — Precise audio feedback marked right on the waveform
- *Text & Voice Feedback** — Add written or recorded comments on specific mix points
- *A/B Mix Version Comparison** — Side-by-side listening of different mix versions
- *Kanban Task Management** — Visual boards to track mix review progress
- *NLP Feedback Conversion** — Automatically converts feedback comments into actionable to-dos
- *Built-in Task Lists** — Turn mix notes into assignable tasks with status tracking
- *Project Workspaces** — Each project gets its own space with synced notes, files, tasks, and tracks
- *Real-Time Collaboration** — Live review sessions for distributed teams
- *Asynchronous Collaboration** — Review and feedback that works across time zones
- *Client Demo Pages** — Browser-based mix preview pages that work on mobile and desktop with no downloads
- *Album Planner** — Tools for sequencing and organizing album projects
- *Quick Search Navigation** — Fast search across projects, tracks, and annotations
- *Per-Project Sync** — Notes, files, tasks, and tracks stay synced within each project
- *Desktop App** — Native desktop application for the full workflow
- *Subscription Plans** — Base, Pro, and Enterprise tiers with escalating track/album limits
- *StackSocial Lifetime Deal** — One-time payment option available
Who is it for?
- Audio producers and mix engineers who want precise, time-coded client feedback without email chains
- Recording studios and mixing engineers working with remote clients
- Bands, artists, and managers coordinating mix reviews across multiple tracks and versions
- Audio students and educators running collaborative review workflows
- Remote collaboration teams who need a dedicated audio review platform
- Anyone currently using StackTune or email-based review who wants better organisation
Who is it NOT for?
- Video producers — Frame.io or similar video review tools are better suited
- Casual listeners or non-technical clients who just want to hear a mix — the demo page works, but the full tool is for producers
- Solo producers with no client feedback loop — the collaboration features are the core value
- Projects with massive multi-track sessions exceeding 200GB — Enterprise storage may be insufficient
The Bottom Line
Opusonix is a focused, well-built collaboration tool for audio producers who are tired of email-based mix review. The time-stamped waveform annotations and A/B comparison are the core strengths — they make feedback precise and visual rather than vague. The Kanban task management and NLP feedback conversion are nice touches that organise the workflow, and the client demo pages lower the barrier for non-technical clients. The Reddit audio production community has noted it as a StackTune alternative with a better album planner and centralized calendar. The main caveats: no TrustRadius listing, so third-party verification is thin; the subscription pricing means some users will prefer the StackSocial lifetime deal; and as a StackSocial deal, the affiliate link needs to be verified to ensure Paul gets proper attribution. Until that is confirmed, the deal will be created INACTIVE.
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