Yamaha DX21 Editor and Librarian

Patch Base has the best Yamaha DX21 editor and librarian available for Mac and iPad. Edit any parameter, organize patches, create random patches, and more.

FM Voice Editor

Patch Base makes FM easy to work with by showing you the layout of the currently selected algorithm and the envelopes and settings of each operator. You can finally visualize what's going on inside of the DX21, and once you do, it's not that complicated. Everything is shown on a single screen, including the Pitch Envelope, LFO, and external control settings.

Bank Editor

Patch Base's Bank Editor let you change and organize the saved sounds on your Yamaha DX21. You can easily save a bank to a file for back up and storage, and import entire new banks in seconds.

Patch Librarian


Download Patch Base for iPad free in the App Store.

View in App Store

Patch Base runs on macOS 10.13 and higher. Download it here.


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