For SM3 I need to play with different tips to get the best sound, since I do find some tips tend to make the sound sibilant, compared to other tips.
As far as EM6 PRO,
Bass: Best thing about EM6, very powerful, one of the most powerful bass I ever heard in a CIEM. And the control is super too, you don't feel it distort other part of the spectrum much which is rare for bass heavy earphones. It really goes deep and the decay is really neutral, so it provides this very dynamic presentation.
Mid: I will call it very neutral, it's where it should be placed with good liquidity. Doesn't sound recessed even the bass quantity is on the larger side.
High: This is a very interesting region. It sounds really lush without producing any sibilance, and at the same time very airy too~. The airy sound really make the bass sound it's moving lots of air. That's some great tuning. But with that said, it still sounds dark. There is a broad cut around 8-12k. I feel they really want to tune it sound signature to something like LCD 2's. However it doesn't have the trasparency that LCD 2 has. The upper region of the high of EM6 is very well extended. almost as good as LCD 2. But I feel there is a slight emphasis at the far end, which does make the sound a little bit...don't know the word. like "particulate matter like feel".
Soundstage: it's decent, the combination of different regions of the spectra does create a pretty realistic space. Medium horizontal size with great depth.
It probably sounds like a V shaped HD650 of LCD 2 if you know what I mean lol.
The key words will be: Smooth, organic, dynamic, bass, airy~
I feel EM6 is very good for pop, hip hop, electronic type of music. for rock and classic it will probably lacks something.
Edited by tupac0306 - 11/16/12 at 8:13am