Hardware setup as mentioned.
there's one thing i found out about the iPhone to DAC startup. Because the cameraconnect driver is original iPad software It doesn run as smooth on a iPhone.
After installing it trough Cydia (bigboss Repo) It wil detect the DAC imidiatly but when reconnected it didnt work at first.
If u do the following steps it will work.
Reboot phone (I use NCSettings to quicly reboot the phone to detect the DAC.)
After reboot start the DAC connect the USB cable to the CCK.
The phone has to be unlocked (See foto) then connect the CCK connector. voila.
About the sound quality.... I dont do sound to letter emotion.'It doesnt work for me.