What is the best way to get the audio signal from an iPad Mini to my Crack? Not really interested in BT, and want it to be as simple as possible while maintaining signal quality. Can I run a 3.5mm headphone out from the Mini to the RCA's directly? Seems like that would be the simplest/cheapest as that kind of cord is cheap. Or do I need an adapter for the lightning port to run the Crack RCA's? Or do I need a DAC or preamp? Trying to create a listening station with as small/simple footprint as possible.