Well, it's been about 25 hours... The bass hasn't settled too much, maybe a little. The problem, unmentioned before, of sibilance still hasn't gone away. Sibilance can be heard in both the vocals and upper treble, mainly with cymbals and clashes (the ch sound for the cymbals and the sh sound for vocals). Still an aggressive little IEM that's pushing its limits. It's got high points, but they don't come without the lows.