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APU Software Loudness Limiter 5.7.8

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APU Loudness Limiter is a limiter plugin that controls overall loudness (LUFS) and peaks at the same time, so a track can hit a streaming target and a True Peak ceiling in one pass. It’s for mastering engineers, podcasters, broadcasters and anyone delivering to loudness standards like Spotify, Apple Music or EBU R128.

APU Software Loudness Limiter 5.7.8 Overview

APU Loudness Limiter is made by APU Software, LLC, a small US developer of loudness and dynamics tools. It’s part of the APU Loudness Series, which also includes a free Loudness Meter, a Compressor, an Optimizer and a Leveler. Most limiters only catch peaks. This one can limit several measurements at once: Momentary, Short-Term or Integrated LUFS, plus RMS, sample Peak and True Peak. Each type has its own threshold and ceiling, and the limiter adjusts its timing to fit them. It works on stereo, surround and Dolby Atmos. Channels can be linked or processed independently. A built-in visualizer shows source, target and output loudness over time, as a rolling history or a histogram. This makes it easy to see where the limiter is working hardest.

Key Features

Multiple loudness types at once. Limit LUFS (Momentary, Short-Term, Integrated), RMS, Peak and True Peak together, each with its own threshold and ceiling. Streaming and broadcast presets. Starting points for Spotify, Apple and EBU R128 loudness targets. Learn-and-lock gain correction. Play a representative section and it learns a correction to bring average loudness near the target, then locks it for export. Detailed timing controls. Attack, release and look-ahead, Natural and Inertial ballistics, Linear Release, and timing budgets that keep the reported latency fixed. Loudness visualizer. Rolling history and histograms, saved snapshots, and a “breath residual” view that shows where output differs from the target. Surround, sidechain and dithering. Support for multichannel and Atmos formats, an external sidechain input, and optional dithering.

Extensions Details

File Size47.7 MB
Version5.7.8
DeveloperAPU Software
PublisherAPU Software
LicenseFree

System Requirements

Minimum
OSmacOS 10.14 Mojave
ProcessorApple Silicon
Recommended
OSmacOS 10.14 Mojave
ProcessorApple Silicon

How to Use APU Software Loudness Limiter 5.7.8

Run the macOS installer and choose the standalone app and the plugin formats you need: AU, VST or AAX. If macOS blocks the installer, go to System Settings → Privacy & Security and click Open Anyway. Rescan plugins in your DAW and load the limiter on your master or delivery bus. Pick a preset such as Spotify or EBU R128, then enter your license after buying.

Frequently Asked Questions