I was thinking of picking up an E17 for my laptop. Should I be waiting for the E18 or E19?
As an aside, I have a Galaxy Nexus. I thought the issue with USB Audio on Android devices was a driver issue. What does Parall3l mean by the E18 is going to allow for Android digital out? What does the DAC (FiiO) have to do with anything?
I think somebody typed E18 by accident instead of E19. As far as "should," you need to ask yourself if the E17 has the right mix of features for you. It is one of the best portable Amp/DAC combo components right now, with nice hardware "boosts" (less quality loss than a software EQ). You know a DAC is a Digital to Analogue Converter, right? So instead of using a soundcard in your laptop or desktop, the E17's DAC section would convert your audio from digital bits to analogue waveforms. It seems FiiO is making a portable Amp lineup – E02i, E6, E11, E12 – a portable amp/DAC combo lineup – E7, E10 (which can't act as a standalone amp for MP3 players), E17, and E19 – a standalone DAC line – D3, D5, D7 – and they have two desktop amps – E9 & E09k, A1.
I don't know much about bypassing the internal DAC of an Android smartphone like the Galaxy Nexus, but I have been happy with the built-in DACs of my portable devices, still seeing a clean effect from sending a line-out signal to an external amp. I think you wouldn't hear much difference using an external DAC unless your audio files are large with at least "lossless" compression and a high sampling rate.