Warning! Restoring the factory sounds will delete all existing presets on your Protein. It’s best to back up your user presets beforehand by recording them as a MIDI dump using a suitable program (MIDI OX for Windows, or Sysex-Librarian for macOS). The Send/Send Range function is located in the Presets/Actions menu.

Or you can use Chutney, our new free Librarian software for macOS and Windows. Click here for the Chutney installer

How to proceed: While powering on the unit, hold down the three encoders (Attack and Decay in the Lines section and the Release encoder to the left of them in the Texture section) for a few seconds.
You’ll then find the “Load Factory” option at the very bottom of the Actions menu