Audio problems always show up at the worst possible moment. Noise on vocals, bleed in recordings, or a mix that just won’t separate cleanly. That’s exactly where RX 12 steps in. With RX 12, iZotope expands its well-known editing and audio repair environment with stem-based workflows and machine learning. The key highlight: RX 12 can break complex mixes into stems and make them editable again. For this review, the focus was mainly on RX 12 Standard, since it covers most of the new features relevant for producers. Reviewed!
RX 12 Key Facts: These Features Change Your Workflow
iZotope RX 12 introduces several important updates for modern audio workflows. Here are the most relevant points.
audio editing and repair suite with over 50 modules
new stem-based workflow with Stems View
Scene Rebalance for separating dialogue, music, and effects (Advanced)
Music Rebalance now available as a realtime plugin
redesigned De-bleed with machine learning plus realtime plugin
improved Breath Control for vocals and dialogue
enhanced Dialogue Isolate with new neural networks
new Trim Silence for automatically removing pauses (Advanced)
updated interface with larger spectrogram and module search
available in Elements, Standard, and Advanced
All New RX 12 Features – Key FactsiZotope RX 12 in the Studio: From Repair Tool to Editing EnvironmentStems View: Why RX 12 Opens Up Your Mix AgainMusic Rebalance: Direct Control Inside Your Mix, Now in RealtimeIn Detail: Why Small Tools Make the Biggest DifferenceDialogue Isolate: Why the New Version Also Matters for VocalsStandard vs Advanced vs Elements: Which Version Makes SenseReal-World Test: How RX 12 Performs in the StudioCleaning and Controlling VocalsEditing Stems from Finished Mixes: Where RX 12 Really Stands OutRemixes and Edits: Where the New Feature Saves Real TimeOptimizing Podcasts and Voice RecordingsTypical Use Cases for ProducersConclusion: iZotope RX 12 Evolves into a Real Mixing CompanionPersonal TakePrice and AvailabilityPros and ConsFAQMore Info
iZotope RX 12 in the Studio: From Repair Tool to Editing Environment
RX has been one of the go-to solutions for audio repair and detailed editing for years. With RX 12, that focus clearly shifts. Instead of concentrating only on individual repair tools, RX now moves toward a full environment where complete mixes can be edited. Stem-based workflows and machine learning play a central role here.
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iZotope RX 12 Standard
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For this review, RX 12 Standard was the focus. It covers most of the new features relevant for producers without moving too far into the post-production territory of the Advanced version.
iZotope RX 12 Standard · Source: iZotope
Stems View: Why RX 12 Opens Up Your Mix Again
With Stems View, RX 12 introduces one of its most important new features. Audio can be separated into individual components using modules like Music Rebalance or Dialogue Isolate. The result is immediately audible. These elements appear as separate tracks and can be edited individually.
What matters here is not just the separation itself, but the workflow that follows. You can apply the full RX toolchain directly to each stem, isolate problems, and then combine everything again. This changes how you approach finished mixes. Material that was previously locked becomes flexible again.
Music Rebalance: Direct Control Inside Your Mix, Now in Realtime
Music Rebalance remains one of the core tools in RX. It allows you to adjust elements like vocals, bass, or percussion inside a finished mix. In RX 12, it is now also available as a realtime plugin. This was overdue. It means adjustments are no longer limited to offline processing but can happen directly inside your DAW.
Stems and Rebalance · Source: iZotope
For producers, this opens up practical use cases. You can rebalance a mix, isolate vocals, or create instrumentals without access to the original stems.
In Detail: Why Small Tools Make the Biggest Difference
Two updated modules show how precise RX 12 has become. De-bleed has been completely redesigned and now uses machine learning to reduce signal bleed. Typical issues like headphone bleed or mic leakage can be handled more directly. A realtime version is also included.
Breath Control has been improved as well. It detects and reduces breathing in vocals and dialogue, saving time compared to manual editing and keeping results consistent.
Dialogue Isolate: Why the New Version Also Matters for Vocals
Dialogue Isolate is one of the key RX modules and has been further improved. Post-processing speech recordings often takes time. RX 12 Advanced reduces that workload. With new neural networks, the module now removes noise and room ambience more precisely.
Dialogue Isolate of the Advance version · Source: iZotope
While it is designed for dialogue, it also works well on vocals. Especially with problematic recordings, it can make material usable again.
Standard vs Advanced vs Elements: Which Version Makes Sense
RX 12 comes in three versions with clear differences. RX 12 Standard offers a broad feature set for audio repair, editing, and stem workflows. It includes Stems View, Music Rebalance, Dialogue Isolate, De-bleed, Breath Control, and more.
RX 12 Advanced adds tools for post-production and professional environments. These include Scene Rebalance, Trim Silence, multichannel processing, Ambience Match, De-rustle, De-wind, and more.
RX 12 Elements is the entry-level version with a limited set of modules such as De-click, De-clip, De-hum, De-reverb, Repair Assistant, and Voice De-noise.
The right version depends on your use case. For most producers, Standard hits the sweet spot, while Advanced targets larger post-production setups.
Real-World Test: How RX 12 Performs in the Studio
On paper, RX 12 looks strong. In the studio, the real value becomes clear. Modern productions often run into detailed problems. This is where RX 12 shows how quickly complex tasks can be handled.
Cleaning and Controlling Vocals
With vocals, RX 12 proves its effectiveness quickly. Dialogue Isolate and Breath Control help remove noise, room reflections, and breathing artifacts. Instead of combining multiple plugins, many tasks can be handled inside one tool. This saves time and keeps results consistent.
Editing Stems from Finished Mixes: Where RX 12 Really Stands Out
One of the most interesting areas is working with finished mixes. Using Stems View together with Music Rebalance, full tracks can be separated into components. Vocals, drums, bass, and harmonic elements are not perfectly isolated, but often clean enough to work with.
In practice, this leads to very specific use cases. You can slightly boost vocals in a finished mix without touching the rest. You can reduce harsh hi-hats that feel too present in the master. You can even control low-end issues if the bass does not translate well.
Remixes and Edits: Where the New Feature Saves Real Time
This is where RX 12 becomes especially interesting. Instead of relying on poorly prepared stems or rebuilding a track from scratch, you can work directly with existing material. Individual elements can be isolated, reshaped, and placed into a new context. This saves time and opens up creative options that previously required much more effort.
There are limits. Separation is not the same as real multitracks and can introduce artifacts, especially with dense or heavily processed material. This is where experience matters. Subtle adjustments usually deliver the best results, while extreme settings can sound unnatural.
Combined with other RX modules, the workflow becomes very flexible. You isolate a problem in a stem, process it with tools like De-noise or EQ, and then bring it back into the full mix. That is what makes RX 12 so powerful. It gives you access to material that was previously fixed and untouchable.
At the end of the day, the software does not replace real stems, but it gets surprisingly close in many situations. And that is often enough to fix, improve, or rethink a mix.
Optimizing Podcasts and Voice Recordings
RX 12 also performs well in spoken audio. Tools like Trim Silence, De-click, and Voice De-noise help clean up longer recordings quickly. Pauses can be detected and removed automatically, and unwanted noise is reduced. For podcasts or interviews, this can significantly speed up the workflow.
RX 12 audio repair as a plugin · Source: iZotope
Typical Use Cases for Producers
vocal editing and cleanup
working on finished mixes
remix preparation
sample repair
optimizing spoken audio
Conclusion: iZotope RX 12 Evolves into a Real Mixing Companion
RX 12 clearly moves beyond pure repair. Instead of just fixing problems, it becomes part of the production process. That makes it immediately relevant in everyday studio work.
Stem-based workflows, realtime plugins, and improved machine learning make handling complex audio more flexible. RX 12 Standard already covers most use cases for modern production.
Personal Take
RX used to be a problem-solving tool. You opened it when something was wrong. With RX 12, that changes. Many features now integrate directly into the creative workflow and make the tool more interesting for producers.
The combination of Stems View and realtime processing turns RX 12 into more than a repair suite. It becomes an active part of production.
Price and Availability
iZotope RX 12 is now available in Elements, Standard, and Advanced editions here at Thomann* starting at €105.00. You can also purchase the software as an upgrade, at a discounted price through the EDU program, or as part of various iZotope bundles.
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iZotope RX 12 (various editions)
at Deal
Many professionals use RX for editing in the studio · Source: iZotope
It runs on macOS and Windows, and individual modules are available as VST3, AU, and AAX plugins. A free demo version is also available.
Pros and Cons
Pros
extensive audio repair tools
new stem-based workflows
realtime plugins for faster processing
strong machine learning integration
versatile use cases
Cons
Advanced version is significantly more expensive
some features limited to higher tiers
FAQ
What is iZotope RX 12?
An audio editing and repair suite with over 50 modules.
What does Stems View do?
It allows editing individual elements within a mix.
Which version should you choose?
Elements is a basic entry point, Standard covers most production needs, Advanced targets post-production and professional workflows.
Can RX 12 be used in DAWs?
Yes, via VST3, AU, and AAX plugin formats.
More Info
Official iZotope website
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