TL;DR Would it make sense to pair both devices with a Fiio E12 using the standard headphone jack as opposed to the Apple connector/micro USB out.
I have a pair of HD 600's connected to the Headphone Out of my Xonar Essence STX, since 90% of my music listening happens at the computer. I would like to be able to use my headphones with my iPhone 4s and my Nexus 7 (2013) when I am at my parents place for example. The HD 600's have an impedance rating of 300 Ohms (up to 550 Ohms depending on the frequency).
My research so far has yielded rather disappointing - as in inconclusive - results. True audiophiles always prefer a DAC & amp combo while others say that both the iPhone and the Nexus already have very capable DAC's so it's just a matter of supplying enough current to the cans to reach the desired volume. To sum it up and pose a question you guys can actually and directly address: Would it make sense to pair both devices with a Fiio E12 using the standard headphone jack as opposed to the Apple connector/micro USB out.
Edited by Veydar - 2/28/14 at 8:21am