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.
DRC Update produces a hard crack and then disables audio
Just starting the App with the Preset "Aspirate", playing some notes and then 3 notes at the same time, gives a realy hard crack and then audio is disabled.
I tried 3 times, every time the same.
After killing the App, sound comes back... till the next test with 3 notes.
iPad Pro 9.7 with latest iOS