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Originally Posted by kostalex /img/forum/go_quote.gif
Warmer and especially slightly bassier ER4P is a dream IEM for many. And E4c is not this dream.
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ER4P are very neutral IEMs, and if you get the proper DAP or amp you will get a slightly bassier and warmer sound from them. I think Sony DAPs(A818/A729/A829) may be the best DAPs for ER4P unamped. They will drive them well, and the don't have the rolled-off bass the other DAPs have, so you WILL get bassier sound. Clear Bass is a great thing too. A818/A729/A829 tend to be a little bit on the warm side, so you will get warmth too. Thats easily altered by the test menu, where you can boost the bass with up to 10.5 db(and then add some Clear Bass for fine tuning) and you can even choose the frequency cut. That goes for treble, too, though you can boost it by 1.5db and choose the frequency cut too. Thats especially good for removing sibilance if your headphones are sibilant.
If you go amped(maybe later, as its pricey), I'll suggest a DAC/amp combo - Headamp Pico. It costs 500$(yeah, I know, but don't forget thats Head-Fi
) and will give you that slightly warm sound we're talking about, plus nice, tight and defined bass. ER4P really need good amplification, as they're basically a very heavy load - their cable contains a 25Ohm built-in resistor and the actual drivers have even lower impedance, so you need power in order to hear bass. While Sony DAPs do a great job, they can't deliver the maximum current needed by ER4P. Pico can do that, especially out of a DAP with digital out.
But the easiest way to add some bass and warmth to your Etys is to change the tips - try the Shure's black olives or some Comply tips. They'll show you the bass ER4P are capable of.