I am going to focus on how I jam when I’m not in my home studio. Because the Ultra-III has a USB jack built into the guitar, no separate interface box is required. I couldn’t find a non-proprietary male USB Type-B to Lightning adapter cable. The Epiphone comes with a heavy-duty male USB Type-A to male USB Type-B cable. If you prefer a similar but shorter cable, you can order one from Amazon here.  You then need a female USB Type-A to male Lightning adapter cable. Continue reading How To: Playing a USB-connected Guitar in GarageBand for Your Mobile Studio