So, essentially, the headphone 'out' of the phone gives me the phone's DAC result, but using an OTG cable, out of the phone's USB will allow a connected DAC to give me it's results....but this is how I access my music (thumbdrive through an OTG into the phone's USB). I guess what I really need is a DAC that has a USB input, and a screen to view the files on the thumbdrives.
Thanks for the clarifications, folks.
Thanks for the clarifications, folks.