Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
IDAM/SMUX/MusicIO users [macOS] USB charging issues
Assuming your devices are not faulty and your cables are original Apple taxed products...
What do you guys/gals do when your iPad starts fritzing between on/off charging states while connected to USB? I've seen the suggestion to kill the 'usbd' process in the Activity Monitor...sometimes works, often doesn't...
From what I can gather it seems to be more of a thing when your iOS device is under 80% battery level but that's just an intuition. I have not been able to find a decent answer to this. I use a mid-2015 MacBook Pro Retina mostly and I think it may be an issue with the software/hardware of this particular computer as I've never had any issues with the old mid-2011 iMac.
Thoughts? Feelings? Hard data?