IEM with 6 Balanced-Armature drivers and three ‘switches’ to adjust the sound.
Adjustable sound profile with 3 physical switches.
Knowles drivers: brilliant highs, detailed mids, deep bass.
4-way crossover and 80.6 mm acoustic tube for clean, balanced sound.
Adjustable impedance (16-32 Ω), sensitivity: 110/113 dB.
8-wire silver-plated monocrystalline copper cable with MMCX connectors.
Ergonomic design, 3D printing, light weight (6.2 g per capsule).
Includes carrying case, pouch, 15 pairs of ear tips, organiser and brush.
Frequency response: 15 Hz - 40 kHz | Connector: 3.5 mm gold-plated.
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FiiO FA9: High-Fidelity Sound with Six Balanced Armature Drivers
The FiiO FA9 are the brand’s first in-ear monitors to feature a six Balanced Armature driver configuration per earpiece, delivering an exceptional level of detail and sound quality.
Customizable Sound Profile
As a standout feature, each earpiece includes three physical switches to customize the sound profile. They also feature an extra-long 80.6 mm acoustic tube and an eight-core silver-plated monocrystalline copper cable, designed for maximum audio fidelity.
Engineered for Demanding Audiophiles
Each FA9 unit houses six Knowles BA drivers. Combined with a carefully optimized 4-way crossover and a dedicated sound tube, they reproduce the entire audible spectrum with stunning clarity.
For treble, the SWFK-31736 driver delivers a bright, well-defined sound free from sibilance.
The midrange is handled by the custom EJ-33877 driver, which offers rich, detailed vocals—ideal for complex vocal recordings.
For bass, the HODVTEC-31618 driver provides deep, full-bodied lows with impactful presence.
Sound Engineering Excellence
The 80.6 mm sound tube not only physically separates the drivers to prevent interference but also acts as a low-pass filter, removing unnecessary harmonics and ensuring smooth transitions between frequencies.
The result: cleaner mids and lows, and a perfectly balanced frequency response.
Tailored Tuning
Thanks to an adjustable electronic crossover system, the FA9 lets you manually tweak impedance and frequency response using the three built-in switches. This allows you to fine-tune the sound to your musical preferences or the type of content you're enjoying.
Striking Design
Crafted with high-precision DLP 3D printing, the FA9 offers a robust structure perfectly shaped to fit the human ear.
Its finish features an elegant diamond-cut faceplate paired with a translucent black resin shell, creating a modern and sophisticated look with unique visual effects from every angle.
Ultimate Comfort
Thousands of ear models were analyzed in the design process, resulting in a compact, ergonomic shape. Weighing just 6.2g per earpiece, they offer a secure and comfortable fit for extended listening sessions.
High-Performance Cable
The included cable is made from silver-plated monocrystalline copper with eight braided cores, ensuring accurate, lossless signal transmission.
It comes with MMCX connectors and a gold-plated 3.5 mm jack, making it compatible with a wide range of audio devices.
Included Accessories
FiiO HB3 leather case
Additional carrying pouch
15 pairs of ear tips (balanced, bass-enhanced, vocal-enhanced, Spinfit, foam, and double-flange)
SK-02 magnetic cable organizer
Cleaning brush
Technical Specifications
Type: In-ear monitors
Frequency response: 15Hz–40kHz
Drivers: SWFK-31736, EJ-33877, HODVTEC-31618
Impedance: 16–32 Ohms @ 1kHz
Sensitivity: 110/113dB @
Connector: 3.5mm, MMCX
Weight per earpiece: approx. 6.2g