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FiiO FF3
"Drum" Type Dual-Cavity Earbuds
“Drum” type bass cavity | 316L stainless steel polished construction Bass-enhancing acoustic flute design | 3 types of sponge covers included Ultra-fine copper-clad aluminum Daikoku voice coil | 14.2mm large driver Beryllium-plated dome + PU gasket diaphragm | Twist-lock swappable plug High-purity silver-plated monocrystalline copper cable
*Pictures are for reference only. The real product may vary.
Note: The product layout is for reference only, and everything is subject to the actual product.
Inextricably linked,
two colors to choose from
The FF3 is offered in two colors: Elegant Black/Cosmic Silver. They may have different appearances, but still give off the same irresistible vibe.
Solidly built,
316L stainless steel polished construction
The FF3 follows in the tradition of other FiiO products being made of carefully chosen material subject to fine craftsmanship. The stainless steel housing undergoes polishing and PVD electroplating to make it not only look attractive, but also comfortable to wear. The cover for the dynamic driver is made of highly-permeable tempered glass. When viewed under light, the glass gives a crystal-clear, transparent look with various distinct layers depending on the angle you look at – giving the FF3 a unique, striking presence.
Magnificent sound and shape,
“Drum” type bass cavity
Based on the drum musical instrument, an all-new bass cavity design was made especially for the FF3. This cavity was specially designed to full harness and utilize resonances to more effectively bring out the texture of bass notes as well accurately reproduce the timber of music with surprising agility.
Dive deeper into your music,
Bass-enhancing acoustic flute design
FiiO R&D made full use of the internal space of the FF3’s housing to fit a bass-enhancing acoustic tube within. This tube extends the airflow path, increases air damping, and improves sound damping to lower the resonance point of the earphones for amazing sound performance. This allows the FF3 to reproduce frequencies as low as 90Hz under normal open wearing [1], and have an effective frequency range down to 42.5Hz for truly deep earbud bass.
[1]Normal earbud wearing refers to conditions without use of a sponge cover.
[2]Effective frequency range refers to the range of frequencies in which the frequency response is not more than 10dB below a certain sound pressure range.
*Above test data are results from FiiO Labs. *Audio test instruments: APx555B+Brüel & Kjær Head and Torso Simulator (HATS) 4128C.
Not just big but potent too,
14.2mm large dynamic driver
Thanks to its large 14.2mm dynamic driver, the FF3 can release more energy when playing back music to allow for a more clean and natural sound. Experience the vigorous sound of beating drums, as well as energetic dynamics in your music with the FF3.
Specially-chosen materials,
Beryllium-plated dome + PU gasket diaphragm
Good sound not only comes from the size of the driver, but also from the materials it is made of. After many tests by the FiiO R&D team, a beryllium-plated dome + PU gasket dynamic driver was chosen for the FF3. The beryllium-plated diaphragm is both highly rigid yet lightweight, reducing unwanted vibration and thus unwanted distortion. PU is used for the dynamic driver’s gasket, and its characteristics allow more detailed and textured bass. And not only does the bass come through wonderfully, mid-frequency human voices are lush and the treble also has been greatly improved – with an effective frequency range up to 17kHz [2]. A greater effective frequency range also has the benefit of giving the impression of a larger soundstage.
Capturing all details,
ultra-fine copper-clad aluminum Japanese Daikoku voice coil
Excellent sound comes from carefully considering all design aspects of the product, including the parts that are not so easily seen when using it. The FF3’s dynamic driver features an ultra-fine copper-clad Daikoku voice coil. With only a diameter of 0.033mm, the Daikoku voice coil is lightweight and helps to reduce the overall weight of the dynamic driver, allowing it to move faster and further improve treble resolution.
Listening to your heart’s content,
3 types of sponge covers included
The FF3 comes standard with 3 types of sponge covers for different kinds of sound – bass-enhancing, balanced, and transparent treble-focused. Pick the ones you want to use for different kinds of music and to your own taste. For better resolution, it is recommended to use the transparent treble-focused sponge covers.
Fully equipped,
high-purity silver-plated monocrystalline copper cable
The FF3 cable comprises 152 total wires made of high-purity silver-plated monocrystalline copper. This was specifically chosen as the silver-plating improves treble resolution while reducing unwanted sibilance. The sheath of the cable is made of German TPU – allowing the cable to be not only resistant to yellowing and hardening, but also allows for increased cable flexibility so that it is more comfortable to wear and for less undesirable microphonics.
A true benchmark,
Twist-lock swappable plugs
The FF3 features an all-aluminum twist-lock swappable plug design, allowing you to change between 3.5/4.4 mm plugs whenever you need to. This allows you to more easily enjoy the FF3’s exemplary sound, setting a true benchmark in its class.
*Interchangeable audio plugs are officially licensed from the patent by FABRILOUS.
Immediately pinpoint,
With “Left Blue Right Red” design
add a thoughtful "left blue and right red" convenient identification design to the ear handle of the earphone to start every music journey quickly.
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Professional Reviews 85/100
Nicely Roasted
Sound Quality
85/100
Fit Comfort Isolation
84/100
Build Accessories
91/100
Value for Money
84/100
The FiiO FF3 brings traditional earbuds to life with weighty bass, expressive mids and a spacious, out-of-head presentation. PortaFi highlights its natural balance, lively dynamics and wide stage, while Prime Audio Reviews praises the rich, relaxed tuning, long-session comfort and premium stainless-steel finish. Foam options let listeners fine-tune its warmth and fit.
What Reviewers Are Saying
Pros
Full-bodied, impactful bass with natural detail, weight and useful sub-bass presence.
Spacious, enveloping soundstage with convincing layering and an open, out-of-head feel.
Premium metal construction, attractive glass-backed design, generous foam selection and interchangeable terminations.
Comfortable and stable for extended listening, including for a reviewer who often experiences earbud hotspots.
&
Cons
Treble is smooth but softened, limiting top-end precision; sensitive listeners may find the upper range somewhat bright depending on fit.
Resolution, separation and image placement become less precise on dense, complex recordings.
Open-earbud design provides noticeably limited passive isolation in noisy environments.
SOUND QUALITY PERFORMANCE 85/100
The FF3 is described as a musical, broadly balanced earbud with a full-bodied low end, engaging mids and an unusually spacious presentation. Its main trade-offs are softened top-end precision, only moderate resolution in busy material, and imaging that favors atmosphere over pinpoint placement.
Bass
88/100
Prime Audio Reviews hears generous, mid-bass-led lows with useful sub-bass presence when the buds are seated deeply. PortaFi likewise finds bass deep, weighty and impactful, with natural detail and convincing overtones rather than an overly bass-heavy presentation.
Midrange
86/100
The midrange has substantial vocal and instrumental weight, producing the warm, rich and emotive character noted by Prime Audio Reviews. This fullness brings some coloration rather than strict neutrality, while PortaFi notes an upper-mid lift that gives female vocals and distorted guitars extra crispness and energy.
Treble
83/100
High frequencies are generally smooth and non-fatiguing, with Prime Audio Reviews describing them as rounded and softened for long-session comfort. PortaFi hears good extension and attack, but notes that the treble approaches brightness for sensitive listeners and that decay is slightly slower than ideal.
Resolution Separation
78/100
Prime Audio Reviews considers overall resolution and instrument separation middling, reporting some blur on complex tracks. PortaFi finds the bass naturally detailed, but does not offer similarly strong praise for fine-detail retrieval or complex-mix separation across the full range.
Soundstage Imaging
85/100
Both reviewers hear a roomy presentation for the form factor, with PortaFi specifically praising width, layering and a mildly three-dimensional feel. Prime Audio Reviews finds the stage more enveloping than conventionally in-head, but says image placement is vague and stereo stability is not especially exact.
Dynamics Coherence
88/100
PortaFi describes dynamics as great and says musical motion comes through convincingly when present in the recording. The reviews otherwise say little about transient behavior or driver integration, though the overall presentation is consistently characterized as natural and engaging.
FIT COMFORT ISOLATION PERFORMANCE 84/100
The stainless-steel earbuds are reported to sit securely and remain comfortable over long sessions, especially for listeners who usually find earbuds fatiguing. As expected from an open earbud design, outside-noise attenuation is limited.
Seal Stability
87/100
Prime Audio Reviews found the FF3 stable even without foam covers and did not feel they were likely to fall out. PortaFi also found their weight and shaped housing helped them sit more reliably than typical plastic earbuds, while noting that fit will still vary by ear.
Comfort
88/100
Prime Audio Reviews could wear the FF3 for hours without the hotspots that many earbuds can cause. PortaFi found cable-down use more comfortable than over-ear wear, but still reports a good fit with the metal housings.
Isolation
72/100
PortaFi describes isolation as noticeably below average, which is inherent to the open earbud format rather than a construction flaw. The design's open presentation can be appealing at home, but it will not block much noise for commuting or loud environments.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Accessories
91/100
Reviewers praise the stainless-steel or metal shells for their attractive finish, solid feel and carefully executed shape. The package includes a protective storage case, several foam-cover types that alter the tonal balance, and a replaceable cable with a 4.4 mm balanced termination option.
Value for Money
84/100
At roughly $99 to $100, Prime Audio Reviews calls the FF3 reasonably priced but notes that many sub-$100 earbuds can match or exceed its performance. PortaFi calls the sound great for the price and highlights a generous accessory set, though it does not directly compare value against competing models.
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- 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
- Acoustic Technologies — online and in-store — Montréal, Québec, Canada (website)
- Addicted to Audio — online and in-store — Epping, Victoria, Australia (website)
- Advanced MP3 Players — online and in-store — Musselburgh, Scotland, United Kingdom (website)
- Alpha Audio Pte — online and in-store — Singapore, Singapore (website)
- Apos Audio — online and in-store — Oakland, California, United States (website)
- Audeos — online and in-store — Żywiec, Województwo śląskie (website)
- Audio 46 — online and in-store — New York, New York, United States (website)
- Audio Affair — online and in-store — Deritend, England, United Kingdom (website)
- Audio Basic — in-store — Singapore, Singapore (website)
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