2. generasjons DLC membran fra FiiO
FH9 er den første øreproppen fra FiiO som implementer den selvutviklede 2. generasjons DLC (diamond-like carbon) bass driveren. Sammenlignet med første generasjon har magneten blitt redesignet - resultatet er 20% høyere tetthet for å bedre dytte den massive 13,6 mm membranen. Dette betyr at du får enda bedre dynamikk enn tidligere, med bedre transientrespons og ekstremt lav forvrengning.
"The advantage of multi-unit products is that they can extract the advantages of different units and combine them. FH9 not only uses large-size moving coil units, but also uses Lou's ultra-high frequency moving iron units. The frequency response coverage is very wide and the energy density is large. This is very important for the playback of small energy information; for example, the ultra-high frequency is small, but it is extremely important, there is no sense of space, som better resolution requires sufficent sound density. If the density is enough to hear the string, it will feel sticky." - Chief engineer of FiiO IEMs R&D center