iZotope Ozone 9 Advanced Mastering Software (Download)

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PA SKU # XCH 11431025 MFR # 323081
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  • Product Highlights
  • Master With Machine Learning
  • Control Lows, Mids, and Highs
  • Match Your Reference Track
  • Tonal Balance Control
  • Find Your (Tonal) Balance

The Future of Mastering Is in Your Hands

Building on a 17-year legacy, Ozone 9 brings balance to your music with the latest advances in machine learning for mastering audio.

Welcome to Ozone 9

Never before seen processing for low end, real-time instrument separation, and lightning-fast workflows powered by machine learning—it's all here in Ozone 9. Watch the video and take a tour to learn what's new!

AI-powered mastering

Master Assistant can add modern or vintage vibes and help you get the right loudness for streaming.

Match to your reference

The new Match EQ module can give you a custom EQ curve taken from your favorite reference tracks.

Find your (tonal) balance

Tonal Balance Control helps keep frequencies in line, letting you talk to iZotope plug-ins to fix issues accross your session.


NKS Support

NKS support puts the power of Ozone into your creative process, letting you master while making music with Maschine or Komplete Kontrol. Open Ozone on the fly and easily add professional polish while making music on your hardware using hundreds of different presets and accessible parameters mapped to your hardware controls. Add loudness, width, and EQ without touching your DAW and keep the creative juices flowing.


Ozone for Streaming

Get your music ready for primetime in today’s world of streaming audio. Set intelligent loudness targets to prevent your music from being turned down by a streaming platform with Master Assistant and Maximizer. Use CODEC Preview mode in Ozone 9 Advanced to hear your music translated to MP3 or AAC. Upload a reference track to Tonal Balance Control, Master Assistant, or EQ Match, and ensure your music stacks up against the competition. Create with confidence knowing your music will sound great in any format!


Ozone 9 Master Rebalance

New in Ozone 9 Advanced, Master Rebalance uses Source Separation technology to let you change the volume of vocals, drums, or bass in any audio file—even a stereo bounce. It gives you the final say in a mix, letting you correct and change the levels of instruments without needing the original tracks.

Give your vocals a small boost to add presence without affecting the mid-range, or slightly lower the bass guitar instead of using a compressor. Correct weak-sounding drums with one small boost that can save you from hours of EQ surgery. A well-balanced mix makes any mastering engineer’s job easier—with Master Rebalance, you can nudge your sound in the right direction.

Master Rebalance features:

  • Master Rebalance works in real time—no need to render or bounce your tracks.
  • Twin spectrum meters let you see your rebalanced source against the rest of your track.
  • Use DAW automation with Master Rebalance to add dynamic energy during arrangement changes.
  • Solve mix issues with a simple gain change, instead of trying to EQ them away.


Ozone 9 Low End Focus

Low audio frequencies can be the toughest to handle in mastering. Modern mixes often have lots of energy in the low end, and using EQ and compression can lead to artifacts or loss of clarity. With Low End Focus, you can use simple controls to sharpen the edges of your bass sounds, whether they’re flabby kick drums, overwhelming synths, or boomy bass guitars.

Low End Focus can also be used as a subtle effect to get that extra bit of bass “magic” and put your track over the finish line. Go in-depth with surgical controls that let you shape your tone and timbre, and bring out the best in your low end with minimal artifacts using this industry-first bass shaping tool. It’s the fastest way to a punchy, hard-hitting final master.

Low End Focus Features:

  • “Punchy” and “Smooth” modes let you find the right setting for percussive or sustained low end issues.
  • Set an Action Region to add or remove contrast anywhere in your low end.
  • Use the Listen button to hear what’s being removed and avoid over-processing.



Precisely adjust stereo width for your master using the Imager module. The Imager works with up to four frequency bands*, providing independent control over stereo width by frequency. An integrated Vectorscope and Correlation Meter give you valuable visual feedback for the mastering process, including Polar vectorscope modes and a Stereo Balance meter.

*Multi-band imaging available in Ozone Standard and Advanced only

Imager Features:

  • New! Add depth and natural-sounding stereo width to mono or very narrow mixes with two Stereoize modes: Stereoize I for a classic, colorful stereo effect, and the new Stereoize II for more transparent adjustments.
  • Add width to any frequency band without causing mono compatibility problems with Antiphase Prevention.
  • See the width of your mix by frequency, set crossovers, and see the effect of stereo imaging adjustments on different parts of the spectrum with Stereo Width Spectrum view.
  • Easily audition your stereo signal for mono compatibility or left/right signal reversal.



Ozone includes two Equalizer modules (in addition to its Dynamic EQ), each with eight bands of adjustable filters and a variety of filter shapes. Use the Equalizer for initial shaping of your master, then take advantage of Post-EQ later in the signal chain.

Equalizer Features:

  • Choose from digital and analog filter shapes including Baxandall bass and treble, API-inspired Proportional Q, Band Shelf, and resonant High and Low Shelf.
  • Adjust the equalization of the center of your mix independently of the sides of your mix with Mid/Side Processing mode.


Ozone 9 Track Referencing

A/B your master against reference tracks directly within any instance of Ozone or its standalone application. Now an integrated process, track referencing is easy, intelligent, and incorporated into Ozone’s workflow. Track referencing in Ozone allows you to load up to 10 tracks and identifies sections of your reference like Verse or Chorus for easy playback, so you can spend less time finding and more time mastering.

Track Referencing features:

  • Quickly compare and contrast your music while you're working in any module.
  • Track Segmentation: analyzes your tracks on import, allowing you to play or loop any section in your references.
  • Gain Slider: adjusts the overall gain of your reference tracks for better sonic comparisons.
  • Waveform View: select, loop, rename, and adjust the different segments of your reference tracks with the waveform view in Track Referencing.
  • Overlaid Reference Spectra: compare the spectral characteristics of your reference tracks against your music in any module of Ozone with overlaid spectral meters.


Ozone 9 Maximizer

Ozone’s highly regarded mastering limiter features multiple modes of iZotope’s transparent limiting algorithm, IRC™. With Ozone in 9, IRC IV is better than ever, featuring Transient and Modern modes. Get more transparent limiting with less pumping at higher volumes—ideal for times when you need to tame the kick drum peaks without causing vocals to pump, keep the subtle snap of a snare rimshot in a country single, or give a club track incredible impact. Prevent your master from clipping while dramatically lifting the perceived overall audio level for more loudness without sacrificing crisp detail.

Maximizer Features:

  • Experience transparent limiting with multiple modes of the IRC™ (Intelligent Release Control) Limiter technology, now with multiple improved IRC IV modes and IRC Low Latency mode.
  • Threshold Learn: automatic threshold adjustment based on a user-defined LUFS target, ideal for finding the right loudness for your preferred streaming service.
  • Threshold and Ceiling Link: decrease threshold without boosting perceived level to hear the audible effect of your processing.
  • Stereo Independence: independent stereo detection of "Transient" and "Sustain" portions of the signal offer greater control of the stereo image.


Spectral Shaper

Smooth and sculpt problematic and harsh frequencies with the new Spectral Shaper module. Mold your audio by applying frequency-specific dynamics surgically or creatively to create smooth, balanced audio. Fantastic for taming percussive transients, Spectral Shaper can tame sibilant hi-hats, harsh vocals, plucky acoustic guitars, and other overly bright mix elements. For a creative twist, use Spectral Shaper across any frequency band to experiment with timbre, resonance, and transient information without affecting other elements of the source audio.


Dynamic EQ

Now in both the standard and advanced versions of Ozone 9, the Dynamic EQ module lives and breathes with your music. Get finer control over your sound with the precision of an equalizer and the musical ballistics of a compressor integrated into one processor. With an intuitive workflow and clearer visual feedback, Dynamic EQ is a valuable mastering tool that excels where traditional EQs and compressors fail.

Dynamic EQ features:

  • Choose from five filter shapes including high/low shelf, Proportional Q, Band Shelf, and Peak Bell.
  • Toggle between analog and digital modes for minimum or linear-phase processing across six independent bands.
  • Access targeted dynamic equalization with Mid/Side and Left/Right processing modes.
  • Intelligently adjust Attack/Release times automatically across the frequency spectrum with Auto-Scale mode.
  • Dynamic nodes show the direction of your adjustments, to make it clear whether you’re expanding or cutting.



Ozone’s Exciter allows you to add warmth and character to audio across any frequency band selection. Choose from multiple saturation modes including analog-inspired Tube, Retro, or Tape, as well as Triode and Dual Triode modes. Further customize a saturation profile by allowing you to apply different modes to each frequency band.

Exciter features:

  • Choose from the circuit-modeled Triode and Dual Triode modes or the updated Retro, Tape, Warm, or Tube modes.
  • Apply targeted processing with simultaneous multiband and Mid/Side processing options.
  • View excitation by frequency with the Saturation Spectrum display and sculpt the Exciter's frequency output with a post filter.
  • Add harmonics without drastic gain changes with natural-sounding Peak Saturation.
  • Per-band Exciter modes allow you to choose a unique distortion mode for each part of the audio spectrum.



Easily fine-tune dynamics with independent control for up to four audio frequency bands, each with separate limiting, compression, and expansion. Both a limiter and compressor in one module, Dynamics also packs in the precision of iZotope metering, allowing you to surgically glue your mix together and add punch and energy to your master.

Dynamics features:

  • Intelligently automate release times with Adaptive Release mode.
  • Set threshold points for the Limiter and Compressor stages with interactive Threshold control.
  • Automatically set crossover frequencies with Learn mode.
  • Process the center or the sides of your audio with Mid/Side Processing mode.
  • Detection Filter with high-pass and tilt modes provide fine control over the way Dynamics responds to incoming audio.
  • Advanced detection circuit modes feature Peak, RMS, and True Envelope detection as well as variable Look-ahead time.


Ozone 9 Vintage Tape

The Vintage Tape module brings the distinctive richness and feel of tape saturation to your modern digital recordings with all the frequency coloration, distortion, and phase effects of tape. Take advantage of analog tone for masters that sound more musical with added dimension, fatness, and depth. With Ozone 9 Advanced, you now get even more flexibility with the new 7.5 IPS setting!

Vintage Tape features:

  • New! 7.5 IPS setting: A brand new non-linear saturation mode with emphasis in low-mids, perfect for adding thickness and warmth to your music.
  • Get the deep, natural sound and punchy low-end response of analogue tape with the convenience of a digital interface.
  • Inspired by the innovative Studer A810 tape machine, known for excellent frequency response even at the critical high and low frequency range limits.
  • Continuous Bias control allows for precise tuning of frequency and distortion response.
  • Mix in even harmonics for warmer saturation, or leave them out for more accurate tape emulation.


Vintage Limiter

Glue a mix together and add character with the Vintage Limiter’s analog-sounding final-stage limiting. Retain the ease and precision of digital maximizing while bringing a natural feel to harsh and digital-sounding masters for the silkiness, body, and nostalgic vibe of classic recordings.

Vintage Limiter features:

  • Inspired by the Fairchild 670 hardware limiter, famous for its silky smooth compression.
  • Fine-tune the Vintage Limiter’s response to perfectly fit your source material with the Character control.
  • Get visual feedback to inform your limiting with the Gain Reduction Trace meter’s scrolling waveform display.
  • Backwards compatibility lets you load Ozone 6.1 presets that made use of the "Tube" mode in the Maximizer.


Vintage EQ

With the richness, musicality, and color of Pultec equalizers, Vintage EQ lets you brighten your master, smooth out heavy low end, and add body to your digital recordings.

You can bring a musical focus to your EQ with discrete frequency value selections. Use the boost and cut controls separately—yet simultaneously!—for a low-shelf that boosts first, then cuts, and then levels out to smoothly avoid making your mix sound “boomy.”

Vintage EQ features:

  • Add the richness, warmth, and color of analog equalization to your audio.
  • Models the qualities and experience of Pultec hardware equalizers for a unique, musical way to manage equalization.
  • Mid/Side and Left/Right processing modes give you unprecedented control over the stereo soundstage.


Vintage Compressor

The Vintage Compressor module is a single-band feedback compressor for subtle warming and sweetening effects. Featuring program-dependent release times, the compressor tailors release shapes to adapt naturally to your music. Thicken the mid-range, tighten and round out the lows, let the top sparkle, and get authentic vintage character.

Vintage Compressor features:

  • Program-dependent release times keep the compressor's processing transparent, for example, by using longer release times for vocals to reduce pumping and fast release times to keep drums sounding tight and natural.
  • Editable high-pass, mid-peak, and high-shelf sidechain filters let you mimic the nonlinear frequency response of vintage hardware compressors, or create unique compression effects not available in traditional hardware.
  • Automatic gain compensation provides automatic makeup gain, allowing you to easily compare your mix with and without dynamics processing applied.
  • Master Rebalance - Adjust volume on drums, bass, or vocals in ANY audio track, even a bounced mix.
  • Low End Focus - Get clear and punchy low frequencies and avoid artifacts from EQ and compression. “Punchy” and “Smooth” modes let you find the right setting for percussive or sustained low end issues.
  • Imager - Add natural stereo width to narrow mixes with an upgraded “Stereoize” mode.
  • Equalizer - Control the finest details of your sound with fluid metering and new HUD controls.
  • Track Referencing - Seamlessly compare your mix with a reference track at the touch of a button.
  • Maximizer - Make mixes LOUD while preserving dynamics with Ozone’s intelligent limiter.
  • Spectral Shaper - Add instant polish and remove harshness with spectral shaping technology.
  • Dynamic EQ - Make EQ boosts and cuts that respond to the dynamics of your audio.
  • Exciter - Mix and match between seven different types of distortion to add warmth and character.
  • Dynamics - The mastering engineer’s most versatile tool. Tame dynamic mixes and give your tracks energy.
  • Vintage Tape - Introduce rich saturation with all the frequency coloration, distortion, and phase effects of tape.
  • Vintage Limiter - Glue a mix together and get loud, pumping tracks using Vintage Limiter.
  • Vintage EQ - Brighten your master, smooth out heavy low end, and add body to your digital recordings.
  • Vintage Compressor - Add colorful dynamics with compression modeled after famous mastering hardware.
  • CODEC Preview - Hear how your mix sounds as an MP3 or AAC at different resolutions. Listen for any loss of audio quality and anticipate delivery issues down the line. (Available in Ozone 9 Advanced)
  • Dither - For when you’re ready to export, Ozone’s extensive suite of dithering options help you ensure no audible loss of audio quality. (Available in Ozone 9 Standard and Advanced)
  • Updated metering NEW!
  • Improved performance NEW!
  • Resizable windows NEW!
  • UI Improvements NEW!
  • Ozone global presets
  • Ozone module presets
  • Track Referencing
  • Stand-alone app
  • Plug-in hosting (app only)
  • Sample Rate Conversion (app only)
  • Signal Chain IMPROVED!
  • Dither
  • Codec Preview
  • Native Instruments NKS Support NEW!

  • Accessible preset integration
  • Macro controls for NKS hardware
  • Master Assistant IMPROVED!

  • Modern Mode
  • CD & Streaming targets
  • Vintage Mode NEW!
  • Reference target
  • Loudness Targets - High, Medium, & Low
  • Updated Interface
  • Match EQ IMPROVED!

  • Available as module
  • Source & Target snapshot
  • Amount/smoothing controls
  • Set match region boundary
  • Save snapshots as presets
  • Available as plug-in
  • Master Rebalance NEW!

  • Available as module
  • Available as plug-in
  • Separate Drums, Vocal, & Bass
  • Real time processing
  • Spectrum meter
  • Source meter
  • Low End Focus NEW!

  • Available as module
  • Available as plug-in
  • Low End spectrum meter
  • Set Action Region
  • Punchy & Smooth modes
  • Gain Control
  • “Listen” mode
  • Tonal Balance Control plug-in IMPROVED!

  • More genre targets
  • Band solo
  • Fluid metering
  • Control Nectar, Neutron, & Ozone EQ
  • Control Relay gain
  • Import custom targets
  • Broad & Fine view mode
  • Low End Crest Factor meter
  • Maximizer

  • Available as module
  • Stereo Independence
  • Threshold learn
  • Threshold & ceiling link
  • Transient Emphasis
  • IRC I & II
  • IRC LL (Low Latency)
  • IRC III & IV
  • Available as plug-in
  • Imager

  • Available as module
  • Stereoize II NEW!
  • Stereoize I
  • Vectorscope
  • Stereo Width meter
  • Correlation meter
  • Antiphase prevention
  • Multi-band
  • Crossover learn
  • Link bands
  • Available as plug-in
  • Equalizer

  • HUD Display NEW!
  • Mid/Side Mode
  • Surgical Mode
  • Per-band filter selection
  • Available as module
  • Additional Post-EQ module
  • Available as plug-in
  • Vintage Modules

  • Vintage Limiter
  • Vintage Compressor
  • Vintage EQ
  • Vintage Tape
  • Available as plug-ins
  • Spectral Shaper

  • Available as module
  • Available as plug-in
  • Dynamic EQ

  • Available as module
  • Available as plug-in
  • Exciter

  • Available as module
  • Available as plug-in
  • Dynamics

  • Available as module
  • Available as plug-in
  • Operating Systems:

  • Mac: OS X 10.11 El Capitain–macOS 10.14 Mojave
  • PC: Win 7 64-bit (Latest Service Packs)–Win 10
  • Plugin Formats:

  • AAX (64-bit), AU, NKS, VST2, VST3
  • Supported Hosts:

  • Logic Pro X, Ableton Live 9–10, Pro Tools 12.8-2019, FL Studio 20, Cubase 9–10, Nuendo 10, Wavelab 9, Sound Forge Pro 13, Sound Forge Mac 3, Studio One 4, REAPER 5, Reason 10, Audition CC 2019, Premiere Pro CC 2019, MASCHINE 2, Komplete Kontrol, Bitwig Studio 3, Final Cut Pro X.
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