Hello. I'm trying to sample into my MK3 with an iPhone. I use a mini jack cable and the end that goes into Line In 1 has a 1/4 jack adapter to fit. In my settings the MK3 is selected as Audio Interface. For source settings I tried Ext. Stereo and Ext. Mono and all available input settings 1 L+R, 2 L+R etc. But no signal coming thru!? Volume is not muted on my phone. I tested the cable with the mic in on my DJ mixer and I got horrendous sound results but at least I got signal. What am I missing here?