iZotope RX Loudness Control
iZotope RX Loudness Control is an AAX audio plugin for Avid Pro Tools that provides loudness metering, analysis and correction tools. It helps audio engineers and mastering professionals measure and control perceived loudness according to various standards including LUFS (Loudness Units relative to Full Scale) and ITU-R BS.1770 specifications. The plugin is part of iZotope's RX suite of audio restoration and loudness management tools.
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1 suggestioniZotope RX Loudness Control is an AAX plugin that runs inside Pro Tools, not a standalone application. First, ensure you are running Pro Tools 2023.6 or newer — Apple Silicon native support for Pro Tools AAX plugins arrived with that release. If you are on an older Pro Tools build, update via Avid Application Manager to Pro Tools 2023.6 or later. Next, open iZotope's Product Portal (your iZotope account page) to download and install the latest version of RX Loudness Control — iZotope has shipped native Apple Silicon builds of their audio plugins since RX 9 and Ozone 10 (released in the early 2020s). Use iZotope's official installer for the plugin; do not attempt to manually copy the plugin file. Once both Pro Tools and the plugin are current, the plugin will run natively on your Apple Silicon Mac.
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