I'd had the iRig Pro Duo for about a year or so now. I use it with a [first gen] iPad Pro most of the time.
Most of the time I just use it at home and want to monitor with Ear Buds while using the looper or Amplitube studio to record tracks.
I often have trouble getting sound through to the ear buds or even input to be recognized. Usually I end up fooling around with stuff until it automagically starts working. But in my last session last night, I had it where metronome and drum track were playing in my ear buds (plugged into the iPad) and the Amplitube Studio indicated it was recording my feed. But my guitar did not come through the ear buds either during recording or even during playback.
I don't understand the inconsistency, nor what the magic combination is to make it all work consistenty. Occassionally I play "out" in small groups with connection to a portbable amp. How should all of this actually work? Ear buds in the iPad? On the iRig? I assume Amp connects best through the 1/4 "out" jacks, right?