I want to get a portable amp/DAC for the two devices above (actually I also have a Alienware M17X but I am pretty sure that it will work with most anything). I have been lurking around these forums for several months and am aware that the Nexus (phone anyway) has issues with outputting a digital stream across the USB. I know there have been a couple of Android upgrades and some reports of the S2/S3 working after going to certain version of Jelly Bean and/or mod roms.
I am not sure if the Nexus now has some support for usb DAC's or not. I have been waiting patiently for the FiiO E18 but I am not even sure that would/will work. I would greatly appreciate it if someone could give me an idea of what is available and works today and what the future might hold.