What Are AU Plugins? #
AU or Audio Unit is an audio plug-in format developed for macOS and iOS. It can be considered the Mac equivalent of VST plug-ins. Like VSTs, AU plug-ins span the range from software instruments to effects units. They may generate sounds, as in the case of software synthesizers, or they may process audio, as in the case of reverb or delay plug-ins. Whether used to generate sounds or to process them, AU plug-ins are capable of low-latency performance, with practically real-time output.
The default location of AU plugins is: /Library/Audio/Plug-Ins/Components
We scoured the internet for the absolute best of the best free Audio Units plugins available. Go to our FREE plugins page and choose from there. By default when you install CASTER, you will see Apple’s plugins since they come preinstalled on your computer.
To insert plugins in CASTER, open the advanced view of the track you want to insert the plugin to, and hit the + sign. This will open a menu of your installed plugins. Choose any plugin to activate it.
To bypass the plugin, click on the on/off button