Already a member?
How to use a headphone amp
You are currently viewing a single conversation.
Return to Full Discussion
Armaegis summed it up pretty well but I would like to add that the E18 is not only an amp but also a DAC. This will move the conversion of the audio, from 1's and 0's into an analogue waveform, from the internal chip in the phone to the E18. Be aware that with the way Android audio works you may need additional apps to get this to function at all and it is unlikely that you will get to use the E18 with every app. The amp only counterpart(s) would be the E12/E12A. To verify that it is "working" you will simply need to plug in your IEMS to the amp output and see if you've got sound. I don't use an amp with my 6 Plus or my HTC one but I do with my X3ii. I primarily use single-driver dynamic IEM's with my phones. Single drivers are not near as sensitive to impedance mismatches as those that employ a crossover, in particular low impedance multi BA designs. That HEM2 is a single driver BA with a 26 ohm nominal impedance, it *shouldn't be too sensitivity to the output impedance. If it were my money and I had no plans to change to a multi-driver IEM, I would skip the amp and just use the phone. The OPO has a pretty good reputation as far the HO goes.
I don't have an E18; was using it as an example. Yep, aware of difference between Amp and DAP; I use a FiiO E10 to get (one imagines nicer) sound out of my media computer.
For my particular situation, it seems like my phone (OPO) and my DAC (iBasso DX50) both have enough power to drive IEMs decently well, so that an amp doesn't seem likely to help much there. But it is pretty much "the question" what benefit there would be to adding in an E18 or such, and how to determine that it's doing some good.
It's nice to verify some cases where "Amp isn't hugely helpful." But I'll bet many would benefit from knowing how to measure that "Amp is helping", so thanks for the comments!