FiiO FA9 - 6 Knowles BA IEM w/3 sound adjustment switche
Apr 29, 2020 at 6:50 PM Thread Starter Post #1 of 110


Headphoneus Supremus
Nov 8, 2013
FiiO FA9 6 Knowles Balanced Armature IEM


Features of FiiO FA9:-
>Six Knowles Balanced Armature Driver Units.
>Three-Way Tuning Switch & Hi-Res Certification.
>80.6mm Large Acoustic Tube.
>3D printed resin shells.
>8-Core Single-Crystalline Silver Plated Copper Cable.
>Universal MMCX Connectors.

FiiO has released its latest flagship pair of in-ear monitors, the FiiO FA9. It features six Knowles balanced armature driver units on each side that provide crisp clear sound output with a wide soundstage. The pair has 3D printed medical-grade resin shell with a transparent inner cavity and ergonomic design. The faceplate has a diamond-cut design that adds to the rich and premium look of this flagship pair.

Unmatched Sound Output:-
FiiO FA9 is equipped with six Knowles balanced armature driver units on each side. It features SWFK-31736 balanced armature unit for providing a crisp detailed treble section, Knowles 33877 unit for providing solid sweet vocals and acoustic details in the mids section and HODVTEC-31618 unit to provide a thick, deep, and rich lower end. The sound quality is balanced and natural, with crisp clarity and lush vocals. The bass response is deep and punchy, the treble portion is smooth and detailed. This pair is suitable for any genre of music.

80.6mm Large Acoustic Tube:-
FiiO FA9 features a large 80.6mm acoustic tubes that bring output through the drivers to the ear nozzle. They ensure that the output is distortion-free due to multi-driver units and provide a lifelike rich output.

3D Printed Resin Shells:-
The earpieces in FiiO FA9 are made with high precision 3D printing techniques to provide an ergonomic design and lightweight structure to them. They are made up of skin-friendly resin material. The fit with these earpieces is very comfortable, users won’t even notice them even after long music sessions.

Three-Way Tuning Switch & Hi-Res Certification:-
FiiO FA9 is equipped with a three-way electronic switch that users can use to tune the sound output according to one’s personal preference. The pair has received Hi-Res certification from the Japanese Audio Association, it is able to provide details better than cd quality.

Supreme Quality Cable:-
FiiO FA9 has a supreme quality cable included in the package. It is an 8-core single-crystalline silver-plated copper cable with MMCX connectors and 3.5mm termination plug. The cable provides very low resistance to the audio signal and provides a well-detailed signal from the source to the IEM’s.

Quality Accessories Bundled in the Package:-
The package included high-quality accessories including an HB3 leather carry case, 15 pairs of ear tips including 3 pairs of SpinFit premium ear tips, Cleaning Brush, and more
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Apr 29, 2020 at 7:31 PM Post #2 of 110
Looks nice! I'm wondering if Fiio have any plans to upgrade the FH7, maybe a FH9 is coming?
Apr 29, 2020 at 7:54 PM Post #3 of 110
I loved the form factor & resin build of the FA7, but its sound was too warm for my liking. Didn't try the FH7; I'm not really a fan of metal bodied IEMs as I've always found it hard to get a great seal with them.

Curious that the first switch actually changes the impedance

FA9 switches.jpg
Apr 29, 2020 at 8:12 PM Post #4 of 110
Looking forward to seeing some graphs once people get their hands on them.
Apr 30, 2020 at 6:28 AM Post #10 of 110
Awesome to see a new FA-series IEM. Can't wait for graphs, first impressions etc.. Much excitement indeed.
Apr 30, 2020 at 6:29 AM Post #11 of 110
How much FA9 are larger than FA1/7?
@FiiO can you spoil a bit about tuning? I hope that they are FA1 signature with FH7 dynamics and sound quality :)

This 100%
May 4, 2020 at 2:14 PM Post #13 of 110
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May 4, 2020 at 3:27 PM Post #14 of 110
they use the same tweeters and woofers like Audiosense T800, the woofers are also vented with a port similar to T800, i wonder if that is collaboration product between the two brands

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