I am thinking seriously about getting the E17. I swapped out the motherboard in my PC (Windows XP) and as a result I no longer have a headphone jack, so this product would solve that problem. Moreover, I have a Samsung Galaxy Nexus with a pogo pin desktop dock. Apparently, this dock will output optical digital audio:
If so, I will also be able to bypass the phone's DAC and take advantage of the E17's DAC.
What I am wondering... I have a set of amplified computer speakers hooked up to the computer's sound card. When I connect the E17 via USB, does this mean that that sound card will no longer output audio to these speakers? Or is there a way to connect these speakers to the E17 permanently and still be able to plug in my headphones occasionally, as well as connect it to the phone's dock?
Just a thought......check out the mighty FiiO E09K.
It may be what you are looking for.