@progzine I just checked with my USB audio interface not connected and see the tool tip "please connect with iOS audio interface" and notice touching the tool tip on screen does nothing - I plug in my USB interface back in and the tool tip goes away - I unplug it and the tip comes back. I am using a USB audio interface with the USB 3 Lightning Camera Connection Kit with my iPad pro 2nd gen. There must be an issue with using the Headphone Jack Adapter since you have also stated that you have no issues with using this for an input (I assume you must be getting signal into BiasFX) but the tip stays - very interesting and wonder if PG can resolve such a setup (PG may need to buy one of those Headphone Adapters to test and fix this) cheers