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Learn Music and Audio Production | iZotope Tips and Tutorials

How to Use Master Assistant in Ozone

by Geoff Manchester, iZotope Content Team October 3, 2019

Explore the future of mastering:

Ozone 9

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Master Assistant in Ozone is designed to give you a starting point that is intelligently tailored to your music, helping you create a professional sounding master, regardless of your experience level. And don't forget to check out Vintage mode in Master Assistant.

How to set up Master Assistant

If you’re using Master Assistant for the first time, all you need to do is:

1. Place the Ozone mothership on your master track. Click on the Master Assistant button and adjust Master Assistant settings.

2. If you want Ozone to tackle the loudness of a track, choose Manual and move the intensities to control the amount of loudness processing applied to your audio, ranging from low (14 LUFS) to medium (12 LUFS) to high (11 LUFS).

3. Choose a destination. This sets the Maximizer Threshold ceiling to provide your audio with an appropriate amount of headroom based on your destination medium. Choosing CD will set a threshold of -.03dB, and choosing streaming will set the threshold to -1dB. Once you’re happy with your settings, click Next so that Master Assistant can analyze the audio content. For best results, we recommend running Master Assistant on the loudest portion of the track. 

4. When Master Assistant is finished, you can either Accept or Cancel the changes.

Have a listen to Master Assistant at work on the track below. First the dry, then the wet. 

Before Vintage Mode

After Vintage Mode

Modern vs. Vintage modes

Modern and Vintage modes both offer different processing options. Listen to the same track mastered in both Modern and Vintage modes below. Hear how much warmer and fuller the Vintage one is—especially compared to the bass guitar and kick drum in the thinner, more transparent modern version.


Master Assistant is a versatile tool in Ozone, it listens to your audio and settles on parameters to give you a great starting point. The new Vintage mode provides even more starting options, employing the Vintage EQ, Vintage Compressor, and Vintage Limiter to help get a warm, analog-style master. Learn more about your options for accessing Ozone—plus discover what members can access through Ozone Pro.

NEW: Master Assistant in Ozone Pro

Master Assistant is now even smarter in Ozone Pro, setting EQ and Dynamic EQ to improve low-end processing and deliver a clear, full master. Click here to learn more.

Learn more about Ozone:

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