
eMastered
Matchering
LANDR
Diktatorial Suite
AI Mastering
Hashvix
Bandmixr
AI audio processing API and SDK for platforms and developers, built on research from Queen Mary University of London. Add professional-grade mixing, mastering and audio enhancement to any product.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | roexaudio.com | diffyn.com |
| Pricing | ||
| Platforms | ||
| Company | Startup from the United Kingdom · 1 - 9 employees · 2023 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


The Tonn API and SDK are RoEx's B2B audio processing tools, giving developers and product teams access to the same AI audio engine that powers Automix. Platforms can use the Tonn API to add automatic mixing, mastering, audio enhancement and audio cleanup to their own products, without building...
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of RoEx Automix yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No RoEx Automix videos yet. You could help us improve this page by suggesting one.
The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing RoEx Automix and Diffyn.
RoEx Automix's answer
Companies including UnitedMasters, Music.AI and Boombox integrate the Tonn API to add professional audio processing to their platforms.
RoEx Automix's answer
The Tonn API gives platforms access to genuine multitrack AI mixing, not just mastering. Most audio processing APIs work on a finished stereo file, but the Tonn API processes individual stems, applying EQ, compression, panning and dynamics per track. It is built on peer-reviewed research from Queen Mary University of London's Centre for Digital Music, and has been used to process over 8 million tracks in production environments.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
RoEx Automix's answer
The Tonn API is one of the few audio processing APIs that handles multitrack mixing at the stem level, rather than only enhancing or mastering a finished stereo file. It covers the full post-production chain - mixing, mastering, audio enhancement, audio cleanup and mix analysis - in a single integration. A Python SDK reduces time to integration, and the underlying technology is grounded in published academic research rather than proprietary black-box processing.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
RoEx Automix's answer
The Tonn API is built for developers and product teams at music distribution platforms, DAW and recording tools, AI video and content creation platforms, and any product that handles user-generated audio at scale and wants to improve output quality automatically.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
RoEx Automix's answer
The Tonn API is the B2B layer of RoEx, a London-based AI audio technology company founded by David Ronan. RoEx grew out of PhD research at Queen Mary University of London's Centre for Digital Music, combining machine learning with digital signal processing to automate professional audio production. The same engine powers Automix, RoEx's consumer mixing and mastering product, which has processed over 8 million tracks since launch.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
RoEx Automix's answer
The Tonn API is powered by TonnSDK, RoEx's proprietary audio engine combining deep learning with digital signal processing. The technology was developed through research at Queen Mary University of London's Centre for Digital Music and applies per-track analysis and processing across levels, EQ, compression, panning and dynamics. A REST API and Python SDK are available for integration.
Diffyn's answer:
React, Next.js, POSTGRESQL
Share your experience with using RoEx Automix and Diffyn. For example, how are they different and which one is better?
When comparing RoEx Automix and Diffyn, you can also consider the following products.

eMastered makes a song sound better through online mastering.
Compare eMastered to RoEx Automix or Diffyn:

Open-source audio mastering app that masters music based on any reference track you provide.
Compare Matchering to RoEx Automix or Diffyn:

LANDR is online music software for creators: music mastering, digital music distribution, free sample packs, collaboration tools, music promotion, and more. Try it free.
Compare LANDR to RoEx Automix or Diffyn:

Your virtual sound engineer and AI mastering tool with text prompts. Musical, instant, and creative. It upscales audio and gives the comfort of hiring an expensive mastering engineer.
Compare Diktatorial Suite to RoEx Automix or Diffyn:
AI-powered online audio mastering service.
Compare AI Mastering to RoEx Automix or Diffyn:

Hashvix is an AI-powered platform that generates realistic voices and custom tunes in seconds. Create professional-quality music, voiceovers, and audio content with advanced AI tools designed for creators, marketers, and businesses.
Compare Hashvix to RoEx Automix or Diffyn: