Reason Essentials and Rack Extension are trademarks of Propellerhead Software. All other Using the Reason download version while waiting for the box 9. Installation 11 If you are using other audio hardware with your Windows PC 14. Duration: 6:12. Compatible with: Mac. Windows. VST. Standalone. AU. AAX With the Reason Rack Plug-in, you can make music with all of Reason's cherished Rack Extension plug-ins to create the ultimate studio rack of your dreams!