You might check out Viper4Android while you wait, if you can root your phone. It's nice to have, both with and without the E18.

Those that couldn't get the E18 working on the S4 actually found that it worked after the 4.3 update. So yes, it does work on Android 4.3 in general, just YMMV across different devices.

That is indeed what I'm referring to.   I'm definitely curious to hear about your solution...?

Does anyone know where I might be able to get an RFI snap-on filter? I had a small one around that I've been using, but it's just a tiny bit big. (And it does seem to help a small amount; I still get occasional bursts of noise, but it seems to cut out the low-level constant noise -- unless it's...

The updater shows no new updates, and it's a QA testing device (belongs to my work) so it needs to stay stock. Sorry. I do have an Infuse running Avatar Rom (mix of CM and MIUI) and that didn't work either, but that's from the previous generation, IIRC.

Works with the Moto X (Android 4.2.2 on Sprint).   Does not work on the Nexus 7s (2012 and 2013, both on Android 4.4) or the Galaxy S2 (Android 4.0.4 on Sprint).   Unfortunately we won't be getting a batch of devices in at work as I had hoped.

Also, I updated my previous post, but it was pointed out to me that Viper4Android has the feature to 'lock effect mode' to get the headset options working with the E18; to me that alone makes it worth rooting the phone :) (but there's other stuff, too).

  If you're having problems getting it to work with the S4 at all (any player) then you might try updating to Android 4.3; others have been reporting that it works after updating.

  Go into Settings > Audio > Advanced Tweaks, and disable Direct Volume Control. This was one of the first things I found, although it seems that I can now use this feature (I don't know why -- maybe the 4.3 update). When I installed USB Audio Recorder Pro, I also found the same if it was left...

I'm pretty sure that the only problem with CF Auto Root was just an old version of SuperSU that had problems with 4.3. So, easy fix.   But yeah; if it ain't broke... :) I mostly rooted for Viper4Android, and now I'm finding that it's not worth it -- a good player offers more/better anyway. It...

Galaxy S4 Sprint Upgraded 4.2 to 4.3 MF9 to MJA   I had stock rooted 4.2 before; just installed the 4.3 update via Kies (which does not appear to be the recommended way to go if you're rooted; you're supposed to remove root first. So if you haven't updated, then don't do that -- find out...

I used CF Auto Root again, installed SuperSU from the Play store, and got root back without any issues.

Are there any holsters (or something) that would be good for holding a Galaxy S4 + E18? Or even better, perhaps a case?

Regarding interference: I've been getting a little, but not a lot. I cut up a couple of those plastic lined foil zip-seal bags (2 bags = 4 layers in total) and put it between them and it seems to cut out the majority of interference (save for some occasional spots of hissing).   What I can...

  I had to go take a walk with my headphones before I could appreciate the full difference.