FOR PRO TOOLS ON WINDOWS, PLEASE SEE THE FOLLOWING ARTICLE:  SoundID Reference plugin not showing up in Pro Tools [WIN]

The plugin should show up in your DAW as SoundID Reference. If you can't see it, please try relaunching your DAW, restarting your computer, and/or rescanning your DAW's plug-in list.

NB SoundID Reference supports VST2, AAX, and AU (MacOS) plug-in formats

Please make sure that your DAW is scanning the correct locations for your plug-ins. Remember that you can choose custom plugin installation folders by pressing Customize during installation. By default, SoundID Reference plug-ins will be installed in the following directories: 

Windows: 

VST 

C:/Program files/VSTPlugins/SoundID Reference VST Plugin x64 5.X.X.X.dll

AAX

ProTools 11 and newer:

C:/Program files/Common Files/Avid/Audio/Plug-Ins/SoundID Reference AAX Plugin 5.X.X.X.aaxplugin

ProTools 10 and older:

C:/Program files(x86)/Common Files/Avid/Audio/Plug-Ins/SoundID Reference AAX Plugin 5.X.X.X.aaxplugin

macOS: 

AU

/Macintosh HD/Library/Audio/Plug-Ins/Components/SoundID Reference AU Plugin.component

AAX

/Macintosh HD/Library/Application Support/Avid/Audio/Plug-Ins/SoundID Reference AAX plugin.aaxplugin

VST 

/Macintosh HD/Library/Audio/Plug-Ins/VST/SoundID Reference VST plugin.vst