The sound is thinner and there is some sibilance in the highs of some songs.

声音是比较薄的并且有一些歌的高温一些齿擦音。

youdao

You can have a vocal fairly prominent in the in-ear mix without as much of the harsh sibilance from the voice, or from cymbal bleed.

你能够听到十分突出的人声效果，而没有那么多人声中的尖锐的嘶嘶声(齿音？)或者铜钹发出的带刺儿的声音。

youdao

But sometimes, having better technicalities don't always mean a good thing, as the more extended treble in the K181DJ leads to sibilance and a slightly brighter sound than the HD25-1.

但有时，有更好的技术并不总是意味着是件好事，因为在K181 DJ更多的高频延伸导致齿声和更亮的声音相对于HD 25 - 1。

youdao

But in the darkened chapel it was so silent he could hear the faint sweet sibilance as knuckling flames consumed the wicks of the votive candles.

NPR: Excerpt: 'Exiles'

This is also when his annoying sibilance kicks in.

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