First of all, I love these headphones. I'm using it on a daily basis. Mostly for bass heavy electronic music, like noisia, phace, fourward and similar. I also like movie scores like alien resurrection, revenant, most of the junkie xl scores (mad max:fury road!) these are also bass heavy and orchestra pieces. Sometimes I listen classical and jazz, which is still great, but all of these needs eq for me. My best source is my HTC m8 with PowerAmp. I also have a babyface pro interface, but this phone with the eq algorithms in PowerAmp is unbeatable...

So everything with this IEM is just perfect except the low highs. For me, it is so harsh, like a very cheap IEM. I'm very sensitive about this. I listen classical, jazz, chill out, breakbeat, progressive house. It is pretty hard to find IEMs which satisfying my needs. I need exceptional bass quality, warm sound signature, great soundstage. Unfortunately this is not like this. Even the t10i has this problem with the highs, but a little better.   After few hours of listening, it became a little better, but I decided to send it back. (I also tried...