A Gearspace user reported that Ozone 10's Mastering Assistant suggested a very low Maximizer threshold and made a vocal sound distorted. That is a specific user's experience with one track and an older version—not evidence that Ozone always distorts. The thread's replies point out that the result can depend on the mix, listening window, and target; the useful lesson is to check gain reduction and audition the limiter rather than accept an assistant setting as a finished master.

What the report says—and what it doesn't

In a September 2023 Gearspace thread, a user said Ozone 10's assistant suggested a Maximizer threshold around -12 dB and sounded too aggressive on the vocal. In follow-up discussion, the user concluded the assistant had listened to a shorter, quieter section than expected and said changing the threshold helped. Other participants emphasized that the threshold value alone is not meaningful without knowing the input level, loudness target, and gain reduction.

That context matters: a threshold setting is not a universal measure of how much limiting is happening, and one forum report cannot establish a product-wide defect. It does show why an automatically generated starting point should be auditioned and checked against the actual loudest section of a track.

Read the Gearspace discussion (September 13, 2023).

A quick troubleshooting pass

1. Find the loudest, densest section of the full track and let the assistant analyze that section, not just a quiet passage.
2. Bypass the Maximizer, then re-enable it at matched playback loudness. A louder version can seem better even when it is more distorted.
3. Watch gain reduction and listen for vocal harshness, pumping, flattened transients, and bass distortion. The threshold number by itself does not tell you whether the result is appropriate.
4. Raise the threshold or reduce the target loudness if the limiter is working too hard. Re-check the loudest section and the rest of the song.
5. If distortion remains with the limiter bypassed, inspect the mix and individual tracks; the cause may be upstream rather than in the mastering assistant.
6. Compare the export at a matched level with the unprocessed mix. Keep the version that sounds better, not merely louder.

Ozone is a mastering suite with processing tools. Its assistant can provide a starting point, but the decision to keep or revise that processing remains yours.

Where mix analysis helps

MixDiagnose analyzes an exported mix and reports technical characteristics such as loudness, dynamics, frequency balance, and stereo behavior. It does not hear artistic intent, set Ozone's limiter, process audio, or certify that a master is distortion-free. It can provide a separate check of the mix before you decide whether to revise the session or continue mastering.

Analyze your mix with MixDiagnose if you want a separate technical read before mastering. Treat analysis as evidence to investigate, not an automatic instruction to process.

Sources

• Gearspace: “Why does Ozone mastering assistant put the limiter threshold so low?” — user report about Ozone 10, with follow-up discussion dated September 2023.
• MixDiagnose mix analysis — analysis only; it does not master or alter audio.