Hear Them in Action
iZotope RX 12 Advanced
Cedar Audio DNS One
RX 12 ships in three tiers — Elements $99, Standard $399, Advanced $1,399 — against Cedar DNS One at $325 for the native plugin; RX 12 Advanced costs roughly four times DNS One, and even RX 12 Standard sits above it
Best feature
A full repair suite rather than a single processor — Spectral Repair, Dialogue Isolate, De-rustle and Music Rebalance inside the RX Editor's spectrogram, reaching intermittent and one-off damage that no fixed denoiser can touch
The catch
Advanced is priced and specified well beyond an engineer whose actual problem is steady room tone, and hard settings on badly contaminated material can still leave audible artefacts
Best feature
CEDAR Quantum processing at 14-sample latency with a LEARN function that profiles the noise floor — steady HVAC, traffic and hiss come down transparently, and it runs across many channels at once without sync problems
The catch
Deliberately narrow — it suppresses broadly stationary noise and some reverberation but offers no spectral editing, so intermittent and one-off noises still need a second tool
RX 12 Advanced is an expansive suite designed for comprehensive post-production tasks, boasting tools like Spectral Repair and Dialogue Isolate within its spectrogram-based interface. This makes it suitable for detailed editing where intermittent or specific damage requires surgical intervention. However, this versatility comes at the cost of complexity and processing overhead, which can introduce artefacts in challenging scenarios.
In contrast, Cedar DNS One is streamlined around a single task: noise reduction through Quantum processing with ultra-low latency. Its LEARN function profiles the noise floor efficiently, making it ideal for steady-state noise suppression across multiple channels without sync issues. This targeted design caters to mix engineers and post-production professionals dealing with consistent background noise in live recordings or field audio.
The architectural differences underscore their development focus: RX 12 Advanced provides a broad toolkit for diverse repair tasks at a higher price point, while DNS One offers precise, high-performance noise reduction as a specialized solution at a more accessible cost.
iZotope RX 12 Advanced is a premium suite designed for comprehensive post-production tasks, making it particularly valuable for engineers dealing with complex repair needs such as intermittent damage or spectral editing. Its Spectral Repair and Dialogue Isolate tools enable precise editing and repair of multi-layered audio tracks without compromising sound quality. However, the significant cost of RX 12 Advanced—especially compared to Cedar DNS One—means that it may not be accessible for engineers working within tight budgets. Despite this, its comprehensive suite justifies the expense for professionals requiring an all-in-one solution for extensive post-production work.
In contrast, live recording engineers benefit from Cedar Audio DNS One's streamlined Quantum processing, ideal for large multi-track sessions where consistent background noises need to be minimized. Its ultra-low latency of 14 samples and LEARN function allow profiling and suppression of ambient noise efficiently without introducing sync issues in a live mix scenario. Despite its more limited feature set compared to RX 12 Advanced, the DNS One's specialized functionality makes it a cost-effective choice for those focused solely on high-performance noise reduction tasks.
Post-production professionals and audio engineers dealing with complex repair tasks should opt for iZotope RX 12 Advanced. Its comprehensive suite of tools including Spectral Repair and Dialogue Isolate makes it ideal for handling intermittent damage and multi-layered audio tracks, offering the flexibility needed for detailed editing without compromising sound quality.
For live recording engineers or mixers focusing on steady-state noise reduction across multiple channels, Cedar Audio DNS One is the better choice. Its Quantum processing at 14-sample latency ensures efficient noise floor profiling with the LEARN function, making it highly effective in large multi-track sessions where consistent background noises need to be minimized without introducing sync issues.
Those working within tight budgets or with simpler noise reduction needs should look elsewhere. RX 12 Advanced and DNS One are both specialized tools that cater to specific engineering scenarios at premium prices; for general studio use or basic noise cleaning, a more cost-effective option like a dedicated multiband compressor or a simpler noise gate might be better suited.
Price is not the axis here, whatever the spec sheets suggest: DNS One is $325, undercutting RX 12 Standard at $399 and costing a quarter of Advanced at $1,399. What you buy with the difference is reach. DNS One does stationary noise — HVAC, traffic, hiss — transparently, at 14-sample latency, across as many channels as the session needs. RX 12 Advanced buys the spectrogram and everything that follows from it. Steady room tone needs the specialist; unpredictable location audio needs the suite.
RX 12 Advanced leverages AI and machine learning to enhance spectral repair and noise reduction capabilities. However, a comprehensive breakdown of its specific ML features is not provided in this comparison, allowing for further investigation into their application and effectiveness.
Cedar DNS One offers a native plugin at $325. The specific operating system compatibility is not mentioned in the reference, so it's best to verify this information separately for accurate OS support details.
RX 12 Advanced is primarily designed for post-production tasks. The reference material does not address its real-time processing capability, so it's unclear whether the system can effectively handle live event settings where low-latency processing is critical.
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