After 24 hours of burn in, here is my impression.
Highs Still nothing special but at least they don't sizzle. My ears are a bit sensitive to highs and so far the IE8's are producing very satifactory sounds here just nothing spectacular.
Mids Sounds much better than out of the box. Not nearly as veiled. I could still use more mid for my taste. Vocals are clear, but don't stand out as much as I'd like. Compared to my SA6's, the IE8's are still a few steps behind but improving. If the IE8's can match or exceed my SA6's in this area after further burn in, I may reach audio nirvana.
(Of course I could always adjust the mid with the EQ, but right now I'm testing everything with a flaq EQ and various clearbass settings.)
Bass The bass has cleared up quite nicely but are still not as punchy as I would like. The quantity and reach is just awesome. I have the setting on "3" right now. With no EQ the IE8's sound amazing and easily trump my Super.fi Pro 5's in every way including when I have the bass on my A829 maxed. With clearbass turned up on the 3 setting, it can be too much on some songs. Something I NEVER thought I'd say. Sometimes I turn it up anyways just so I can feel the brain rattling bass (although I only use the "2" setting for clearbass. 3 is too much!). It's crazy to be able to pump out so much bass in an IEM.
The Sony tips are still amazing. Very confortable.
The soundstage has really improved. I'm not sure if it's due to the soundstage actually opening up or because the sound just isn't as muddled. Either way, it's a big improvement and I'm loving it.
Classical Music For some reason classical music doesn't sound "right" to me. The imaging seems to be off. I spent quite of bit of my life in Orchestra and have attended live concerts. The spatial representation of instruments just doesn't seem quite right. The separation between the various string instruments and where they relate to the rest of the stage doesn't seem quite right. I will do more testing, but for now classical doesn't seem to be the IE8's forte. Although this may change with more burn in.
I'm testing using Nigel Kennedy's performance of Vivaldi's Four Seasons.
Anyone else have opinions regarding classical music on the IE 8's?