The plug-in and stompbox are different in that the plug-in does have an extended range on the Size knob that makes more sense in a production environment; it ranges from -10 to120 versus just 0–100, like the algorithm on Space, H9, and Blackhole. That negative range on the plug-in renders interesting comb filtering sounds that make more sense in a mix.
With regards to compatibility with Space/H9 and the Blackhole stompbox, the EDM application uses a different software format to the H9 Control preset format, so they're not directly compatible. We are working on adding the ability for our user community to share their presets interchangeably between the family of pedals.
