Moog Music Forum

To answer the question myself: A DI box with ground lift solves the problem

Hello at my device the output hums audibly on the mains frequency plus multiples (German mains 50 Hz).
Error or feature? How could I avoid this?

What about "Open Folder Location via right click on the User Folder? From there you can place any Presets manually (Mac Finder or Win File-Explorer)...