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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.

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Motu 2 midi / Roland A 800 pro keyboard / AUM

edited January 15 in General App Discussion

I just got a Motu 2 audio interface, hooked up the midi din from my Roland A pro, and routed midi in AUM from the Motu to Drambo.

Problem: while the routing matrix looks like it should work, I get no sound out of Drambo

Weird thing: The routing matrix shows a very busy blinking light above the Motu. When I look in Midi Wrench, there is a very busy stream of active sensing messages that go away when I pull out the midi din from the a pro.

Any ideas on how to fix? Thanks!


  • If you can‘t switch off Active Sensing at the keyboard, use a midi filter to eliminate it.
    It‘s a constant source of trouble and useless in today‘s typical setups.

  • You can use the MIDI Monitor module in Drambo to confirm that notes are reaching it. I just tried this, using ZOA as AUv3 in AUM, driving Drambo stand-alone. The correct port in Drambo is the port named "Drambo". This is surprising since most apps use a different name for their Virtual MIDI ports. Check that "Receives MIDI" "Active Track" setting; it can trip you up.

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