Warning: Spoiler! (Click to show)
Here's my portable OTG rig I use with the S3:
Yes, the PCSTEP's DAC is OTG-compatible (and sounds terrific), so the ODAC isn't required.. but I've got a QUICKSTEP (which has no DAC) on the way; which'll seamlessly drop into this setup. My rig should become even neater since this hub & OTG cable replacement is coming, as well.
The reason I'm using a hub between the ODAC & S3 is cause the S3 returns that (dreaded) "..high powered device connected.." error when the ODAC is connected directly to it via OTG. For some reason, using a hub (that doesn't even have to be powered) as an intermediary solves this problem (thankfully, a simple, inexpensive solution).
My international Exynos 4412 SoC-based Galaxy S3 can also work with my ODAC without using a hub.
The HifiMeDiy Sabre should work with the Galaxy S4 using the USB Audio Recorder PRO app, available on Google Play store. There is a free trial version.
Edited by DanBa - 5/10/13 at 5:49am