Is S6 fixed to 440 hz?

I would create some 432 hz ambient soundtracks, actually seems not possible with Super 6.
My feature suggestion for a possible enhancement is:
SHIFT-TUNE- short push + octave selector +/- = FINE TUNING in the range of 425-455 hz
SHIFT-TUNE- long push (more than 2 seconds ) the actual TUNE behavior.

You can globally fine tune the instrument by pressing shift and rotating the encoder.

The centre octave LED will then flash in normal mode to show a tune offset has been applied.

…rotating the MOD AMOUNT encoder…

Thank you!
After three years of use I discovered something new… all I had to do was read the manual…