@support - Roon server runs on sonictransporter i5; Running roon remote on macbook I can browse to load a convolution filter but it only lets me see the local drives, not the sonictransporter. If I load from the macbook but continue with the sonictransporter as roon server (ipad as roon remote), will the convolution filter still be applied? In other words will it be uploaded as a one-time thing from the laptop, such that it does not need to refer back to that file location in future playback?
Yes.
If you want the ability to switch between different filters, without having to go back to the MacBook, define each as a preset after having uploaded it.