FlowLikeWater
100+ Head-Fier
I think that is one of the reasons why they are so engaging. The bass end as brawny as it is stays away from the mids and treble. It is how a proper 2.1 presentation should be for in ears. Dont know what Fiio did to get that to work like that. Most earphones with this much bass will muddy up the sound but not so with the FH9. This is where the results of some RnD probably plays a part of the sound signature. How they improved on the FH5s is clearly evident in the FH9
Folks that love them some EDM need to hear how the FH9 presents EDM it is one of very best for trance music due to its sheer authority.
Yeah that sheer bass power combined with the retention of midrange and treble clarity is very unique, it's got that club thump whilst remaining wholly clean.
Another cool observation is that the sound production remains completely distortion-free, even at tinnitus-inflicting volume levels. A testament to the FH9 quality.