Hi,
I suppose if a sequence was recorded that totally depended on the use of an EW sound ie soprano voice as melody, then it could be recorded as an audio file, and it wouldn't matter whether the other kn7 owner had the expansion boards or not.
Only drawback would be that they would need the SD audio writing kit and a decent sized sd card. Both worthwhile investments in my humble opinion, as the audio functions on the KN7 is one of the great features that really makes it stand out from the rest.
best wishes
Rikki
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best wishes
Rikki 🧸
Korg PA5X 88 note
SX900
Band in a Box 2022