It took me a while to figure it out, but I troubleshot my own problem. Apparently my iPod's 3.5mm jack just went bad and it's making anything connected to it sound like total garbage. I guess it's time to return my brand-new FiiO e11 and pick up an X5 DAP. ;)
Thanks for reading and sorry for having wasted people's time with this thread.
Edited by Djinnenjous - 5/23/14 at 7:01pm