How to merge SoundFont .sf2 files on iPhone, iPad and Mac

Merging SoundFonts means combining several .sf2 files into one bank — handy for building a themed library (say "Orchestra" or "Keys") without juggling dozens of loose files. Here is how to do it on iPhone, iPad or Mac with Rsf2.

Step by step

1. 1Open Rsf2 and tap the Merge tab.
2. 2Tap "Add .sf2" and select the SoundFonts you want to combine (from the Files app, iCloud Drive, Dropbox, etc.).
3. 3Drag presets to set the MIDI order (bank:program).
4. 4Tap Generate and choose where to save the new .sf2.
5. 5Done: a single bank with every preset, byte for byte identical to the originals.

Why there is no quality loss

Rsf2 copies audio byte for byte, with no resampling or re-encoding. The final SoundFont sounds exactly like the source files.

Format limits

The SF2 format supports up to ~4 GB and ~65,000 internal regions. Huge banks can hit that ceiling — if so, merge fewer presets per file.