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Black over-ear in-ear monitors with detachable MMCX cable and three plug tips

FiiO

FiiO FH9 headphone 1DD+6BA MMCX 2.5/3.5/4.4mm Black

SKU CH-2VH7-JSCY4

Flagship hybrid IEM with one 13.6 mm dynamic driver and six balanced armatures, swappable MMCX cable and 2.5, 3.5 and 4.4 mm plugs

  • Product typeHeadphone
  • Hybrid 1DD+6BA driver array delivers rich detailed soundstage
  • 6mm DLC diaphragm dynamic driver extends low frequencies with punch
  • Six Knowles balanced armatures reproduce accurate mid high detail
  • Titanium alloy CNC housing reduces unwanted resonance for clarity
  • MMCX cable with 2.5 3.5 4.4mm plugs fits multiple sources

Flagship hybrid IEM with seven drivers

The FiiO FH9 is a wired in-ear monitor that combines one 13.6 mm DLC dynamic driver with six Knowles balanced-armature drivers. This hybrid configuration targets listeners who want extended bass reach together with detailed midrange and treble reproduction. The titanium alloy shells are five-axis CNC machined for rigidity and reduced resonance during long sessions.

For critical listeners with multiple sources

Audiophiles who switch between portable players, smartphones, laptops and home equipment will appreciate the swappable MMCX cable that terminates in 2.5 mm, 3.5 mm and 4.4 mm plugs. Users who prefer wireless convenience or a single fixed cable without interchangeable ends should consider other designs.

Interchangeable filters tune the signature

Three stainless-steel sound filters let you adjust the tonal balance without changing hardware, giving headroom for different genres or personal preference. The dynamic driver handles low-frequency extension while the six balanced-armature units cover mids and highs; the system reaches its limits when driven well beyond portable source levels or when a non-hybrid signature is required.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $595.99
Pricier than about 92% of the 7,078 comparable items (median $25.99).

Specifications

Product
Product typeHeadphone

Questions about this item

Which source devices can I connect the FiiO FH9 to using the included MMCX cable?

The swappable cable terminates in 2.5 mm, 3.5 mm and 4.4 mm plugs, so you can plug straight into smartphones, laptops, desktop audio interfaces or dedicated players that have matching sockets.

Will the FH9 work properly if I keep using my older portable player that only has a 3.5 mm output?

Yes — the bundled cable includes a 3.5 mm termination, so the IEMs receive a standard single-ended signal from legacy players without any adapter.

How can I verify the 13.6 mm dynamic driver and six balanced-armature drivers are all functioning after setup?

Play a frequency-sweep track; you should hear clean sub-bass extension, articulate mids and detailed treble with no missing bands or distortion.

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