Audio Unit (au) [exclusive] Jun 2026

These generate sound from MIDI data. Examples include virtual pianos, drum machines, and synthesizers.

If you are a Logic user, AU is the only choice that matters. Logic does not support VST3 natively; it demands Audio Units. This exclusivity forces developers to prioritize the AU format, meaning Logic users often get the most stable, bug-free versions of third-party plugins. The integration is seamless—AU plugins handle MIDI routing and side-chaining with a level of polish that often feels clunky in other formats.

Open your DAW. Most (like Logic or Ableton) will automatically scan and "validate" the new plugin. audio unit (au)

An is a modular, system-level software component for real-time audio generation, processing, and analysis. Developed by Apple, it is the native plugin format for macOS, iOS, and iPadOS.

While VST may rule the Windows world, Audio Unit remains the superior, most stable plugin architecture for the macOS ecosystem—provided you don't plan on switching operating systems anytime soon. These generate sound from MIDI data

Audio Units are categorized based on what they do to the signal:

Because AU is part of Apple’s , it communicates efficiently with your Mac’s hardware. This results in lower latency (the delay between playing a note and hearing the sound), which is critical for live performance and recording. 2. Universal Presets Logic does not support VST3 natively; it demands Audio Units

Apple defines several AU sub-types, each tailored to a specific role: