USB is a 'digital out'. There are USB DACs. You will probably need an 'on the go' adaptor to convert micro USB to standard USB. Then there's the issue of powering the tablet, as that's usually done via the USB port...
So all it takes for an Android device is the OTG adaptor cable? In doing some preliminary research, I got the impression that OTG only works with certain Android OS versions, and that the hardware must be compatible as well?
