Oh wow that's really helpful I thought they might have had an RCA or coax cable readily available to use with my smartphone? I think after demoing some headphones yesterday I really am into the idea of going to this now. I think I'll definitely go now. Now to just wonder if I'll go on one day or both. RCA to 3.5mm and coax to 3.5mm will pretty much cover everything there right? Thanks for the help again!