Roland D-20 Editor and Librarian

Patch Base has the best Roland D-20 editor and librarian available for Mac and iPad. Edit any parameter, organize patches, create random patches, and more.

Tone Editor

A D-20 voice (called a Tone) is made up of 4 Partials, in 2 pairs, each with their own "Structure". If that's ever felt confusing, Patch Base clears it up quickly. With the Tone Editor, you can see the structure of your sounds and easily understand what's going on:

• Visualize all of the different parameters in a Tone
• Edit any parameter without any menu diving
• See the settings of each Partial on one screen
• Copy/paste Partials for faster sound design
• Copy/paste envelopes for ease of editing
• Parameter controls are dynamically enabled and disabled to show how different sound settings affect one another

Bank Editor

Edit and organize the 64 sounds stored in your D-20's memory. Patch Base gives you direct access to the bank, so you can organize voices and back them up to files on your device.

Patch Librarian

• Save your patches and banks as files on your iPad or Mac: Patch Base saves files as sysex that can be sent to your synth by Patch Base or any general-purpose sysex transfer app.
• Organize your sounds: Create folders to organize your patches and banks.
• iCloud integration: Optionally use iCloud to make your patch files accessible on any iCloud-connected device, and to automatically sync files between Patch Base on Mac and iPad.
• Import sysex files: Import existing patch and bank sysex files to Patch Base. On Mac, simply drop your files into the Patch Base browser. On iPad, easily import using iCloud or the Files app.