The issue isn’t necessarily ST3 problem, but I came to rely on this after you’ve introduced multitrack.
My Helix (my guitar pedal) serves as a central hub, kinda like a mixer, it allows me to plug in multiple sources of sound, my guitar, vocals and tracks and I’m able to process them all separately with EQ compression etc.
Plugging the iPad using USB (with camera adapter) into helix introduced another issue where certain other apps don’t allow routing like ST3, and further, USB1/2 are only routed directly to the output without the ability to process them.
I have since built up a system, preset that allows me to use everything I need from one iPad, running Spotify on the side while using ST3 and those are routed directly to outputs without processing other than the channel strip I bought (visual EQ console), and the click/count in is running through USB 3/4 where I can direct it to headphones out along with the XLR output (no latency between them).
When I do a band gig I simply plug in stereo out but only send the click through another output on the helix to the drummer, and sub mixes his Edrums with a small mixer along my stereo out (tracks guitar and vocals).
This set up saves me the need to take a bigger more elaborate mixer setup, setup times are easy and there’s no need for many cables between what I do/need and a mixer, monitors etc.
I have come to rely on that processor so much that no being able to use it is going to take precious time, I’ve spent more than a year now barely getting to multitrack about 300 of my 500 string repertoire, and it’s all based on my workflow with my helix, that’s my meat and potatoes, I’ve managed to get to a point where 6 tracks are ok for me, two more will be good but taking my master out processing right now isn’t going to work for me. It’s tones of unnecessary work, it took so long to “balance” my sound and now I’ve got to do it again?
Please find a way to make it possible to route one single stereo output as before (busses or no busses) to the AU and your own master EQ.
I have no other way to make this work for me under any other circumstances. Not with my current setup.
Otherwise I’d be fine with 3.7.5
Thank you for all your hard work. Your app is light years ahead of any other app.