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Quick Answer
Ozone 12 is iZotope’s 3 September 2025 mastering suite—Custom Master Assistant plus Stem EQ, Bass Control, Unlimiter, and IRC 5—not a LANDR-versus-human remake, and not a Boris FX licence explainer. Sound on Sound’s launch list: Elements $55, Standard $219, Advanced $499. Custom flow (genre targets, module toggles, LUFS) ships in all three editions; Stem EQ and Unlimiter are Advanced. Bedroom beatmasters should run Custom flow on a real 2-mix, then audit Bass Control and IRC 5 by ear—not export the first Assistant pass.[1][2][4]
This Page Is Ozone 12 on a Bedroom Mix. It Is Not LANDR Versus Human.
Stay here for Ozone 12 Master Assistant as a bedroom beatmaster tool in FL Studio, Ableton Live, and Logic Pro: Custom flow, which edition actually contains Stem EQ / Bass Control / Unlimiter / IRC 5, and a session order that does not pretend a 2-mix is a stem session. Do not use this page as a LANDR-versus-human mastering verdict.
The LANDR comparison and the July 2026 Boris FX acquisition/licence page are related slugs. iZotope joined Boris FX later; this article stays on the 3 September 2025 product. Neutron 5, RX 11, and Pro-Q 4 are related mix/repair/EQ pages, not this mastering walkthrough.
iZotope’s own framing: Master Assistant is a co-pilot that builds a starting chain, not an upload-and-forget service. MusicTech’s October 2025 review repeats that the results are a guide you are expected to override.[2][4]
Shipped 3 September 2025: Stem EQ, Bass Control, Unlimiter, IRC 5, Custom Flow
Sound on Sound published 3 September 2025: three new modules (Stem EQ, Bass Control, Unlimiter), a more configurable Master Assistant, and IRC 5 on Maximizer. KVR’s news post is the same day. iZotope’s own “What’s new in Ozone 12” video is dated 3 September 2025 and chapters those five headlines.[1][3]
iZotope product copy, as of this page: Custom Master Assistant lets you pick genre profiles or upload references, set a LUFS target, toggle modules, and set processing strength. Stem EQ EQs vocals, drums, bass, and other instruments inside a stereo bounce. Bass Control is the low-end module. Unlimiter restores transients on over-compressed audio via threshold or Learn. IRC 5 is the new Maximizer mode.[2]
Sound on Sound launch pricing: Elements $55, Standard $219, Advanced $499, Music Production Suite $799. Attack Magazine printed the same three SKU numbers. iZotope’s US Elements shop still lists $55.00; the US Advanced shop listing cited here is $499.00. Loyalty/sale windows move; cite SoS for the launch list, not a random coupon.[1][7][5]
Elements, Standard, Advanced: What a Bedroom Session Actually Gets
iZotope’s edition compare: Elements is Master Assistant (Assistant View + Custom flow) and Assistive Vocal Balance—no module list to edit. Standard is 14 editable modules inside the mothership, plus delta, track referencing, and transient/sustain targeting. Advanced is 20 modules as component plug-ins, plus Stem Focus and the Advanced-only processors.[2]
The Standard product page lists Bass Control, IRC 5, and Custom flow in the Standard module set. It does not list Stem EQ or Unlimiter there. MusicTech’s review: Stem EQ, Unlimiter, and Stem Focus are the Advanced tools that fix problems you would otherwise bounce back to the mix. iZotope’s Advanced FAQ names Stem EQ, Unlimiter, and Clarity as exclusive modules.[8][4]
Bedroom implication: if you master your own beats and can still open the mix, Standard plus Custom flow and Bass Control is the SKU iZotope points at. If you only have a crushed stereo bounce from a collaborator, Stem EQ and Unlimiter are the Advanced argument. Elements is Assistant-only; it will not give you a module-by-module chain to learn from.
| Ozone 12 piece | Where iZotope / MusicTech place it | Bedroom use |
|---|---|---|
| Custom Master Assistant flow | Elements, Standard, and Advanced[2] | Set genre + LUFS, then open Detailed View and strip what you do not want |
| Bass Control | Listed on the Standard module page; not an Elements module[8] | 808 / kick weight on a 2-mix you cannot rebalance in the FL mixer |
| IRC 5 Maximizer | Maximizer mode in the suite; Standard page lists it[8] | Last plug, after you stop using it as a mix compressor |
| Stem EQ | Advanced only (MusicTech key features; missing from Standard module list)[4] | Vocal too quiet on a bounced beat, when the session is gone |
| Unlimiter | Advanced only[4] | True-peak-smashed 2-mix you should have reprinted; not a loudness preset |
Custom Flow: Pick Genre, LUFS, and Modules Before It Listens
Ozone 11-style Assistant chose a chain after listening. Ozone 12’s Custom flow lets you pre-select the box it is allowed to use. iZotope: dozens of genre targets, optional reference upload, LUFS target, module toggles, processing strength. MusicTech: Stabilizer gained 25 genre targets plus custom targets from a reference—the same pre-config idea.[2][4]
Bedroom practice: pick the genre closest to the beat (iZotope’s listen page names Hip Hop and Electronic among the demo lanes), set a LUFS target you actually need for the store or DSP, disable modules you already ran on the mix bus (do not stack two maximizers), then let it build. Switch to Assistant View for macros, Detailed View for the real EQ and limiter.
This is still not an online mastering service. The file never leaves the DAW insert. If you wanted a human mastering engineer or a LANDR-style upload, that is a different article.
Stem EQ, Bass Control, Unlimiter: Use Them as Mix Debt Tools
Stem EQ (Advanced): MusicTech measured Vocal / Drums / Bass / Other, up to eight EQ bands per stem, on the stereo file. iZotope’s copy says vocals, drums, bass, and instruments. Use it when the rap vocal is 2 dB down and the project is already bounced—not as a substitute for the FL mixer you still have open.[4][2]
Bass Control (on Standard’s module list): machine-learning low-end for translation across systems. Bedroom monitors lie about 40–80 Hz; this is the module iZotope built for that. Solo it in delta, then check a phone speaker and a car if you have them. Do not add Bass Control and a second low-end focus module until you have heard one of them off.[8]
Unlimiter (Advanced): threshold or Learn, then raise missing peaks. MusicTech: strong when transients were crushed, weaker on a mix that is generally over-cooked. If Unlimiter is doing the heavy lift, reprint the mix with less clipper on the 808 bus.[2][4]
IRC 5: The Maximizer Mode, Not the Whole Master
iZotope calls IRC 5 the most advanced Maximizer algorithm yet and claims loud, clear limiting without the usual pumping/distortion tradeoffs. MusicTech: IRC 5 is a four-band multiband limiter using the same psychoacoustic IRC idea as earlier modes. Put it last. If IRC 5 is doing 6 dB of gain reduction on a beat that still has a mix-bus limiter, turn one of them off.[2][4]
Codec Preview and dither stay in the mothership for MP3/AAC checks. Use them before you upload a DistroKid WAV, not as tone controls.
A Bedroom Session in FL, Ableton, or Logic
Hosts on iZotope’s current requirements block include Ableton Live 12, Logic Pro 10.8–11, and FL Studio 25, plus others. Formats: AAX, AU, VST3, 64-bit; VST2 is gone. Confirm the live spec if your FL build is older.[5]
- Finish the mix with Ozone off
Fix 808 versus kick, vocal level, and harsh hats in the DAW. Master Assistant will not un-clip a red mixer track. Related Neutron 5 page covers mix assistants. - Insert the Ozone mothership last on the master
Leave headroom. Do not also run a stock limiter in series unless you have a reason. Elements users only get Assistant + Vocal Balance here.[2] - Run Custom flow with a genre and a LUFS target
Toggle off modules you already used. Let it listen to a loud chorus/drop, not the intro. Then open Detailed View.[2] - Audit Bass Control and IRC 5 separately
Bypass Bass Control; if the phone test still works, you did not need it. Bypass Maximizer; if the beat only works 4 dB louder, you are using IRC 5 as a mix crutch.[8] - Reach for Stem EQ or Unlimiter only on a stuck 2-mix
Advanced only. If you still have the session, fix the vocal or the clipper there. MusicTech treats those modules as mix-debt tools, not default chain inserts.[4]
What Not to Do With Master Assistant on Beats
- Do not export the first pass iZotope and MusicTech both describe Assistant as a starting chain. A/B against the unmastered 2-mix at matched loudness before you bounce.[4]
- Do not treat Stem EQ as a mixer Separation artefacts are still a thing. If the vocal smear is obvious, go back to the session. Related RX 11 page covers repair, not mastering EQ.
- Do not confuse this with LANDR or a human master Those comparisons are a related slug. Ozone 12 is a local plug-in suite with an assistant. It does not replace a mastering engineer on a release that needs one.
- Do not shop the Boris FX news as a feature list Ownership continuity after 2 July 2026 is a different article. This page is the 12.x feature set that shipped 3 September 2025.
Trial, Hosts, and As of Sep 2026
iZotope’s product pages offer a 10-day trial. Attack Magazine noted the same window at launch. Run it on one beat you already released and one you have not. If Assistant View is the only screen you ever open, Elements may be the honest SKU; if you live in Detailed View, Standard is the one SoS priced at $219 launch.[2][7][1]
As of Sep 2026 this page cites the 12 launch feature set and the SoS USD list. Recheck iZotope’s shop for live checkout, upgrade SKUs, and subscription bundles. Regional storefronts differ (the EU Standard page we opened showed a euro price). Do not treat a EU or sale figure as the SoS $219/$499 list.
If you need mastering and mix plug-ins with a licence you can quote, start from verified software rather than treating Master Assistant as an online mastering service. Plugg Supply free processing is 0; the free tier is ready non-premium archives only, and paid plans add processing and Telegram delivery.
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Frequently Asked Questions
- When did iZotope Ozone 12 come out?
- Sound on Sound and KVR date the release 3 September 2025. iZotope’s own “What’s new in Ozone 12” video is timestamped the same day.[1][3]
- How much is Ozone 12?
- Sound on Sound’s launch list: Elements $55, Standard $219, Advanced $499, Music Production Suite $799. iZotope’s US Elements shop lists $55.00; the US Advanced shop listing cited here is $499.00. Sales and regional storefronts change—cite SoS for the launch MSRP.[1][5]
- What is Custom Master Assistant flow in Ozone 12?
- A pre-configuration mode: pick genre targets or upload a reference, set a LUFS target, toggle which modules the Assistant may use, and set processing strength, then let it build a chain you can still edit.[2]
- Is Stem EQ in Ozone 12 Standard?
- No on the pages cited here. MusicTech marks Stem EQ (and Unlimiter) Advanced only. iZotope’s Standard module list includes Bass Control and IRC 5 but not Stem EQ or Unlimiter. Custom flow is in Elements, Standard, and Advanced.[4][8]
- Should a bedroom beatmaker use Master Assistant as the whole master?
- Use it as a starting chain. Finish the mix first, run Custom flow, then audit Bass Control and IRC 5 at matched loudness. Do not export the first Assistant pass. This is not a LANDR-versus-human verdict.
- What is IRC 5?
- A new Intelligent Release Control mode in Ozone’s Maximizer. iZotope markets it as the most advanced limiting algorithm in the suite. MusicTech describes it as a four-band multiband limiter.[2][4]
- Is this article about Boris FX buying iZotope?
- No. Ozone 12 shipped 3 September 2025. The Boris FX acquisition and licence-continuity page is a related slug for 2 July 2026 ownership, not this feature set.
- Which Ozone 12 edition should a beatmaker start with?
- Elements if you only want Custom flow. Standard if you want Bass Control, IRC 5, and 14 editable mothership modules on your own beats (SoS launch $219). Advanced if you master other people’s bounced files and need Stem EQ and Unlimiter (SoS launch $499). Run the 10-day trial first.[1][2]