This is a video tutorial on installing garage band plugins. http://mda.smartelectronix.com/effect... Once you have the dmg file downloaded unzip it and go to Macintosh/library/audio/plug-in's/components and drag and drop the MDA component file. GarageBand Tutorial (2019): How to Install Plug-Ins - YouTube In the Plug-ins area, click the Instrument slot, choose either AU Generators or AU Instruments, then choose a plug-in from the submenu. These garageband plug ins include a wide variety of audio unit filters. … If you’re unfamiliar with the process, downloading and installing third party Audio Unit plugins to GarageBand for Mac may seem less than intuitive. iZOTOPE: First up, we have an incredibly powerful yet intuitive audio unit plugin called the iZOTOPE. You can download the audio unit filters ( AU plugin ) from this website. Adding an Audio Units instrument plug-in replaces the original instrument plug-in. The plug-in window opens, showing the plug-in’s controls. GarageBand for Mac comes loaded with more sounds, effects and other audio options than you can shake a stick at, but chances are you’ll want to broaden your sonic horizons at some point.