Yes that is correct, no root access needed

Yes that is correct, no root needed. But there is a way to root the phone without loosing its warranty: http://www.ibtimes.co.uk/root-galaxy-s4-snapdragon-600-exynos-5-android-4-3-without-warranty-void-1431730

Glad to hear that it worked, now I have to decide if to keep the E07K or the E18 as I dont need both. I guess I need some time to test them both and compare them.

Hi, I know this is an old thread but just thought I would make people aware that the FiiO E07K will now works with the Galaxy S4 if you have Android 4.3, no additional drivers or software needed. I found this out after I bought the FiiO E18 and this did not work until I updated my phone. Hope...