FiiO FD3
The FD3 makes its case with a wide, holographic soundstage and coherent single-driver flow: natural, forward vocals meet textured bass, lively treble, and convincing dynamics. Headfonics highlights its natural balance and comfort, while Prime Audio Reviews praises the rounded stage and articulate mids. Interchangeable tuning filters complete a polished, musical all-rounder.
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Nicely Roasted
Sound Quality
88/100
Fit Comfort Isolation
88/100
Build Accessories
91/100
Value for Money
93/100
Pros
Spacious, well-rounded soundstage with convincing width, depth, and natural instrument placement.
Coherent, natural-leaning presentation with articulate forward vocals, strong midrange tone, and musical dynamics.
Generous accessory package, including multiple tip styles, a storage case, MMCX tool, and tuning filters that alter clarity and treble energy.
Cons
Bass impact and sub-bass weight may feel restrained for listeners seeking a bass-heavy presentation.
Forward, energetic treble can be fatiguing for treble-sensitive listeners.
The standard cable is durable but somewhat stiff, with memory and minor microphonics.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 88/100
Reviewers describe a coherent, natural-leaning single-dynamic-driver presentation with mild bass and treble emphasis rather than strict neutrality. Its spacious stage, clear vocal range, controlled low end, and convincing musical flow are recurring strengths, while ultimate treble extension and bass weight divide opinion slightly.
Bass
88/100
Prime Audio and PortaFi hear punch, slam, texture, and good control, with a mild emphasis centered more on mid-bass than sub-bass. Headfonics finds the impact restrained, so listeners seeking especially forceful low-end weight may want more.
Midrange
90/100
The midrange is repeatedly praised for natural note weight, articulate and forward vocals, accurate tone, and a pleasing lack of dryness. Prime Audio notes that it is not the most micro-detailed presentation, but considers it especially strong for the price.
Treble
86/100
Treble is energetic, detailed, and naturally toned, with PortaFi finding extension above average and percussion nuances well rendered. It is not especially soft or forgiving, however: Prime Audio and PortaFi both caution listeners sensitive to brighter, more forward treble.
Resolution Separation
87/100
PortaFi hears good resolution, small nuances, and a technically capable presentation without losing musical weight. The black filter is reported to add clarity and openness, though reviewers do not place its microdetail among the very best available.
Soundstage Imaging
91/100
A notably broad, rounded stage with useful depth is one of the FD3's most consistent strengths. Headfonics, Prime Audio, and PortaFi all describe spaciousness above the usual level for this price, with natural instrument placement and believable scale.
Dynamics Coherence
89/100
PortaFi praises both macro impact and subtle dynamic shading, citing fast transitions, emotional expression, and solid low-frequency authority. The single-driver design is also described as notably coherent, without audible crossover discontinuities.
FIT COMFORT ISOLATION PERFORMANCE 88/100
The angled nozzles and ergonomic housing are widely reported to fit securely and comfortably, while the semi-open construction still provides more passive attenuation than expected. Individual ear shape will remain a factor, but the supplied tips give owners meaningful scope to optimize the fit.
Seal Stability
89/100
Headfonics reports a comfortable fit, while PortaFi says the angled nozzles sit properly in the ear. Reviewers do not identify recurring seal loss or bass changes caused by fit, and the extensive tip selection should help users dial in a secure seal.
Comfort
88/100
Headfonics explicitly calls the fit comfortable, and PortaFi finds the shell/nozzle angle well suited to insertion. One reviewer appropriately notes that comfort varies by ear anatomy, but there is no broader report of pressure or fatigue.
Isolation
85/100
Despite its semi-open design, PortaFi finds isolation slightly above average and sufficient for streets and ordinary urban transport. It will not shut out very loud environments such as a metro system as effectively as a deeply sealed closed monitor.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Accessories
91/100
The metal shells receive praise for their premium, attractive finish, with Prime Audio highlighting the celluloid-style faceplate under glass. FiiO also includes several practical tip types, interchangeable tuning filters, an MMCX removal tool, and a storage case; the filters make a meaningful rather than merely cosmetic addition.
Value for Money
93/100
At roughly $100-$155, reviewers consistently frame the FD3 as an affordable and strongly equipped option. PortaFi calls the price its biggest advantage and finds the design, presentation, included kit, and sound unusually impressive for the money.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
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Specifications
Manufacturer's Description — FiiO
Flagship-level DLC diamond diaphragm | Front acoustic prism Semi-open acoustic design | Interchangeable sound tubes 2.5D film coating glass faceplate | Quality swappable 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.
A new challenger has arrived
The FD3/FD3 Pro follows in the footsteps of its FD line siblings in using a newly designed 12mm flagship-level dynamic driver.Inside the FD3/FD3 Pro's striking shell lies a driver with a robustmagnet of 1.5 Tesla magnetic flux paired with an ultra-finecopper-clad aluminum Japanese Daikoku voice coil for an amazing,powerful sound.
1.5Tesla
Magnetic flux
12mm
Driver diameter
Distinguished diamond heritage
The FD3/FD3 Pro benefits from the numerous
advantages of FiiO's new dynamic driver. The diaphragm is made of Diamond-Like Carbon(DLC) which is both impressively rigid and helps to reduce unneeded distortion yet also surprisingly light，
Flagship-grade acoustic prism
The acoustic prism so effectively used in the flagship FD5 for great sound quality is also featured in the FD3/FD3 Pro. Like with the FD5, the acoustic prism system brings numerous benefits such as eliminating high frequency standing waves, enhancing overall sound wave diffusion, and even effectively solving the problem of time delay caused by sound wave propagation path in the cavity. This all leads to marvelous sound quality that will surely take your breath away.
Better sound with semi-open design
The semi-open design of the FD3/FD3 Pro based on FiiO's technology for balanced air pressure within brings several advantages. Not only does such a design lead to more natural sound, but it also effectively protects your hearing by balancing air pressure within the FD3/FD3 Pro leading to less pressure on your eardrums. This makes your listening experienceless tiring and the sound less forced.
Form and function arc into one
The FD3/FD3 Pro has a simple, yet beautiful appearance based on the theme of curves. The unique celluloid panel is covered with 2.5D film coating glass for a pure yet fresh transparent look. And the aluminum-magnesium alloy of the body makes the FD3/FD3 Pro exceptionally light, making it easier and more pleasurable to carry around.
Always striving for perfection
FiiO has always been concerning about exceptional high quality craftsmanship, and the FD3/FD3 Pro is no exception to this rule. The aluminum-magnesium alloy main body is made inan industrial process combining five-axis CNC processing and hand polishing. The pin-point precision of machinery and the delicate touch only possible by human hands come together to create a phenomenal piece in the FD3/FD3 Pro.
Dial in your sound
The well-received interchangeable sound tubes on the FD5 that so well symbolize it as a flagship also make an appearance on the FD3/FD3 Pro. While the outer diameter of the sound tubes is the same, the inner diameter differs for each sound tube. Pick the large inner diameter tube (black) for detailed treble, and choose the small inner diameter tube (red) for robust bass. Let your inner perfectionist be happy with the ability to dial in your sound perfectly.
Well-equipped from start to finish
Each of the FD3 cable's numerous features has been carefully designed to truly enhance your experience. The cable adopts an expanded MMCX connector for easier cable changes; the curved audio plug design makes it easier to plug into; and 4 strands of high-purity monocrystalline copper wires for a total of 120 wires make your music and vocals simply vivid.
Next level FD3 Pro exclusive cable
The FD3 Pro comes with an exclusive cable made of high-purity monocrystalline silver-plated copper, with 8 strands of 19 wires each for a total of 152 wires braided together in Litz Type 2 style. In addition, the cable features left blue and right red markings for convenience as well as interchange audio plugs, allowing you to freely switch between 2.5/3.5/4.4mm plugs depending on your source. With this cable, every music note has never been clearer!
New interchangeable plug
*This cable is individually sold as LC-RC on the market.
Notes:
FIIO earphones include either the new or old interchange plug. The difference lies solely in the craftsmanship, materials, and structural design of the plug, with no difference in the cable wires. Both versions are genuine. Please refer to the actual item received. Thank you for your understanding.
Hi-Res Audio certified
The FD3/FD3 Pro is Hi-Res Audio certified, a testament to its excellent sound that is not only capable of reproducing delicate details, but also is exciting and a joy to listen to.
Verified Dealers
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Authorized dealers for FiiO FD3
- 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)
- All Elite Audio — online and in-store — Perry Hall, Maryland, United States (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)
and 59 more verified dealers