TC-Helicon Voice Processors on 432 hz
Updated: Apr 2, 2019
I've been doing some research on the TC-Helicon harmony singer 2 and found that it will only work with pitch set at 440hz for A., not the 432 hz.
However, the good news is that the TC-Helicon Harmony G-XT does work at 432. You will press a three key combination while power the unit and teach it by paly in 432. It works very well even with the harmony.