Hello, I'm new to audiophile headphones and I mean completely. I bought based upon recommendations on various websites an Aune X1S. I play Spotify with my iPhone 6 and sometimes my Mac. I understand that I can use an RCA cord to do analog. I want to know how I can connect it digitally? I read that I need an Apple lightning camera connector. Is this the one? Here is the back of the Aune X1S: Thanks for any help that you can give