These are the first "serious" earbuds I've purchased. I was going to replace my AKG K240 headphones which are getting old, but wanted to try IEMs as this seems to be the direction that "mid-fi" is moving towards. After seeing how inexpensive these are, I figured why not try them. (I can always buy more over the ear headphones!) But I had read about the dreaded "treble spike" and wondered if I would be able to hear this, or if it would bother me. So I received them, and WOW that's harsh out of the box. Extremely pronounced upper mid-range...