IEM noise/sibilance?

[solderdude]

Done the -10dB and it still there. It only happens to a few tracks though, not all of them.
So it's probably the audio tracks.

Yes, I think so. Some people are more sensitive to (or should I say annoyed/bothered by) sibilance. When a headphone (or speaker) also is prone to sibilance some poorer recordings may well sound sibilant.

looks like you need to find better recordings/versions of the songs or learn to live with it.

 

[zenki]

Probably the latter.

Thank you all