My old iBasso D3 "Python" from 2008 rather surprisingly works with my iPhone 5 running iOS 7.0.4  through a lightning to USB camera adapter.  I guess recent changes in Apple's policies and iOS 7 made this possible. There would probably be a lot of other USB-DACs that possibly works with iPhones...

Well - I needed to shorten the cable on my DT 770.. I am a little puzzled by this cable, as it doesn't seem like these 3 colored wires are isolated from each other? Trying with a Neutrik ntp3rc-b I am not able to find out which wire goes where.. Anyone done this with this cable? Straight...