Convert VST to AU

Understanding VST and AU file formats

VST (Virtual Studio Technology) and AU (Audio Units) are two popular plugin formats used in digital audio workstations (DAWs). VST is developed by Steinberg and is widely used on both Windows and macOS platforms, while AU is developed by Apple and is exclusive to macOS, primarily for use in Logic Pro, GarageBand, and other Apple audio software.

Why convert VST to AU?

Converting VST plugins to AU format is often necessary for macOS users who want to use their favorite VST plugins in DAWs that only support AU, such as Logic Pro. Since VST and AU are different plugin architectures, direct conversion is not always straightforward.

How to convert VST to AU

There is no direct file converter that can simply change a .vst file to .au due to the differences in plugin architecture. However, you can use software wrappers or bridges that allow VST plugins to run as AU plugins within your DAW.

Best software for VST to AU conversion

• Blue Cat Audio PatchWork: This plugin host allows you to load VST plugins inside an AU environment. Simply load PatchWork as an AU plugin in your DAW, then load your VST plugin within PatchWork.
• DDMF Metaplugin: Similar to PatchWork, Metaplugin can host VST plugins inside an AU wrapper, making them accessible in AU-only DAWs.
• Plugin Wrapper by FXpansion (VST-AU Adapter): Although discontinued, some users still use this tool to wrap VST plugins as AU plugins.

Step-by-step process using Blue Cat Audio PatchWork

1. Install Blue Cat Audio PatchWork on your Mac.
2. Open your DAW (e.g., Logic Pro) and insert PatchWork as an AU plugin.
3. Within PatchWork, use Load VST to select and load your VST plugin.
4. Use the VST plugin as if it were an AU plugin within your DAW.

Important considerations

• Not all VST plugins are compatible with wrappers, especially older or 32-bit plugins.
• Performance and stability may vary depending on the plugin and wrapper used.
• Always use the latest versions of both your plugins and wrapper software for best results.

Conclusion

While you cannot directly convert a VST file to an AU file, using plugin wrappers like Blue Cat Audio PatchWork or DDMF Metaplugin is the most effective solution for running VST plugins in AU-only environments.