Using Spark Amp as an Input
I connected my Positive Grid Spark amp to my iPhone via an OTG cable (using the USB output of the Spark amp).
When I record a loop in Loopy, it is picking it up from the microphone, not from the signal over the USB cable. I can tell, because when I talk, Loopy picks it up.
How do I tell Loopy to use the USB output of the Spark amp as its input, rather than the microphone on the phone?