Hello,

You are correct that the wet/dry vs stereo operation of the H90 is not the same as the H9. The H90 requires different physical connections to accomplish either setup.

Using the Polyphony algorithm, there are discrete panning controls for either pitch shifted voice, so you may be able to accomplish what you are looking for with that algorithm by panning both voices to one side. This panning option is only available in a few algorithms (Polyphony, PolyFlex, Head Space) and it is not available for any H9 algorithms.

Yes, you can import H9 presets, but the routing of the presets will be determined by what I/O is hooked up to the H90 and how your inserts are configured. A summary of how the I/O is handled can be found in the Output Mode of the manual here: https://cdn.eventideaudio.com/manuals/h90/1.8.5/content/system-menu/io.html

Let me know if you have any other questions.