I agree. Although i hit max volume now and then, it's with an eq precut and then not that bad. There are rare instances where i require more output, but far and few between. And even though it's a pain, technically the waveforms are so quiet i could safely remove any eq precut and even boost the eq flatly to get enough output.
Also, the difference in amping has been with almost any earphone in my experience. It's more a matter of the amp quality than the er4s themselves. I just hear a very small increase in spaciousness, which gives the sense of better attack and separation. But the difference is very small.
Edited by luisdent - 8/27/13 at 10:33pm