iConnectivity iConnectMIDI2+ Owner's Manual page 36

should you encounter problems with Audio passThru™, try changing these two
parameters until you find a suitable combination.
Port Information
The Port Name here is editable, and the Number of Input/Output channels fields reflect
the settings in the Audio Configuration field above.
Note that you can enable or disable audio to each port, and also that iOS audio is
available only in USB Port 1 (as indicated on the front panel as well). As explained in
the Troubleshooting section near the end of this manual, disabling audio on an iOS
device leaves MIDI active while always enabling the internal speakers, headphones,
and mics.
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