Users report that the DACport LX is not properly recognized by USB OTG as an audio output device. For recent phones like the Samsung Galaxy S III or Samsung Galaxy Note II. This lets cell phones act as a USB host, and send music in untouched digital form out a USB cable and into a DAC.
It should be easy to fix, just by changing some data in your ROM. Here is the best technical explanation I could find. http://www.head-fi.org/t/595071/android ... st_8807747
(talks about a different DAC but the symptoms and their cure are probably the same).
If you read the rest of that thread, it explains what USB OTG is, why its important, its history with Android, lists which DACs work, what cable is needed, the difference between user space support and proper kernel support, etc.
EDIT: in fairness, its hard to say definitively if it’s a CEntrance DACport issue or it’s a Samsung issue. I would ask other users of the few popular devices that have USB OTG Audio (as reported in the head-fi thread) to test them with the DACport. In some sense though it is hard to blame the phone manufacturers for following the spec to the letter.