I have tweaked my -1dB EQ profile slightly and I think that I am really onto something. I am rolling off the equalization a bit earlier which has brought back the IE800's innate slam albeit at the reduced level of bass. I find that at louder volumes (my normal +/- 85dB) I am turning this on and off according to the album. For albums produced with anemic bass, I am happy with the IE800's natural sound signature. However for many albums, the slight reduction works beautifully. (The latest example is Radiohead's OK Computer.) Everything comes beautifully into balance. Since it is only -1dB, there is still lots of bass - and with this iteration, bass slam too.
Here it is:
This -1dB EQ profile also resolves the "genre issue" in my view. I have been listening to a lot of folk and acoustic pop music over the past day. James Taylor, Peter Paul and Mary, Cat Stevens, Marc Cohn, Joni Mitchell, Lindisfarne, Neil Young, Waterboys... all are sounding great.