.EFE disk file and a file on this computer.
Enable sysex on the synth first:
Edit → System-MIDI → Sysex-MIDI, set to ON.
.EFE, the format
Ensoniq disk images and the existing library tools use.
.epswave, JSON
holding the raw parameter blocks and the audio, so a backup
keeps everything — including the words we do not yet
decode.