Hey, when using Ndefs and https://github.com/supercollider-quarks/JITLibExtensions you can save presets.
Maybe consider wrapping the SynthDefs into Ndefs with the MIDISynth Class Video Tutorials on MIDI based music production with Supercollider, jackd and DAW - #10 by droptableuser
@alikthename is explaining how to save the presets at around 1:00:00 in this video 18: MIDI controlled instrument with FX cascade and GUI - Musical Sound Design In Supercollider - YouTube
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