From memory. Unconfirmed by re-visiting.
What I think you’re seeing is that the MicroPitch is preserving the current values in its buffer (Preset “0”), and restoring that state back again on power-up. Not really the same as an auto-save, because it is temporary. I think you’ll find if you switch to another preset, than back to the original, the output volume will revert to its saved position.
