FiiO announced the FT15, a diamond-coated planar over-ear headphone, on September 17, 2026. The company’s launch press release states a $499 price; its official product page lists a 101 mm planar driver, an 800 nm diaphragm, 95 dB/mW sensitivity, 24 Ω impedance, and a weight of 425 g. Availability and final pricing may vary by region.
What are the FiiO FT15 headphones?
The FT15 is an over-ear planar headphone built around an 800 nm ultra-thin diaphragm with a full-face diamond coating, according to FiiO’s launch announcement and its official product page. FiiO says the coating and magnetic design are intended to suppress diaphragm breakup and distortion. Those are manufacturer design claims, not independently verified listening results.
FiiO lists a 101 mm driver and an effective vibrating area of 6,443.5 mm². The company also says the diaphragm is 86.7% thinner than the previous generation and compares its effective vibrating area with the FT5; those comparisons are FiiO’s figures, not independent measurements.
FiiO FT15 specifications
| Specification | FiiO’s published figure |
|---|---|
| Driver type | Planar |
| Driver size | 101 mm |
| Diaphragm thickness | 800 nm |
| Effective vibrating area | 6,443.5 mm² |
| Sensitivity | 95 dB/mW |
| Impedance | 24 Ω |
| Weight | 425 g |
These figures are from FiiO’s official FT15 product page. FiiO describes the headphones as easy to drive, including from a USB dongle. That is the manufacturer’s guidance; independent measurements and hands-on listening results are not established here.
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#1 Best Overall
- 800nm ULTRA-THIN DIAPHRAGM — ENGINEERED FOR HIGH RESOLUTION The FT15 uses an ultra-thin 800nm planar magnetic diaphragm, 86.7% thinner than the previous-generation 6μm design. The extremely low diaphragm mass enables fast response, precise transient reproduction, and fine detail retrieval, bringing greater clarity and realism to vocals, instruments, and complex recordings.
- FULL-SURFACE DIAMOND COATING — FAST, STABLE & LOW DISTORTION FIIO's proprietary multi-layer coating technology applies a full-surface diamond coating to the diaphragm. With diamond's exceptional rigidity and stability, the diaphragm better controls high-frequency breakup and unwanted vibration, helping deliver faster response, improved acoustic stability, and a smooth, low-distortion sound.
- 101mm LARGE PLANAR DRIVER — POWERFUL DYNAMICS & DEEP BASS The massive 101mm planar magnetic driver features an effective vibrating area of 6443.5mm², 35% larger than the previous-generation FT15 design. The increased vibrating area provides abundant energy reserve for powerful dynamics, rich low frequencies, and a spacious presentation that excels with large-scale classical, orchestral, rock, and cinematic music.
- 95dB/mW HIGH SENSITIVITY — EASIER TO DRIVE A specially engineered dual-sided heterogeneous magnet structure and optimized magnetic-field distribution keep the voice coil within a strong magnetic field region, achieving 95dB/mW sensitivity and strong driving efficiency. FT15 can be paired with portable players, DAC dongles, and desktop headphone amplifiers for flexible HiFi listening.
- 425g LIGHTWEIGHT DESIGN & PREMIUM MATERIALS The FT15 combines optimized materials and structural design to keep the total weight at approximately 425g, reducing head pressure during extended listening. North American FAS-grade black walnut ear cups add natural wood grain and a premium handcrafted feel, while the included 6N OCC single-crystal copper cable receives more than 100 hours of -192°C cryogenic treatment.
Price and availability
A Starscream Communications launch press release states a $499 price. This is the announced launch price, not a guarantee of the current selling price or the price in every country.
FiiO’s launch notice points buyers to its AliExpress Official Store and advises contacting an authorized local sales agent for current local stock and arrival information. FiiO says overseas shipments are arranged progressively, so availability may differ by location. The announcement does not establish universal retailer availability.
Rank #2
- The FT7 features FiiO’s all-new self-developed 106mm full-size planar driver, delivering exceptional low-frequency performance. Its proprietary ultra-thin 1μm diaphragm enables lightning-fast response, accurately reproducing delicate high-frequency signals for outstanding dynamic range and frequency characteristics.
- Multi-Coating Diaphragm Technology: Combining the acoustic advantages of 24K gold and pure silver, FiiO’s patented multi-layer coating delivers rich, nuanced sound.
- Premium Materials for Superior Sound: Zebrawood grille and carbon fiber body, with two interchangeable ear pads (genuine lambskin and breathable fabric). Gold-and-silver-coated diaphragm, 18 N52 high-performance neodymium magnets per side.
- Modular Cable Design with High-End Cable: Features a 4.4mm balanced connector (detachable) and includes two audio adapter plugs. Cryogenically treated (-192°C liquid nitrogen) monocrystalline copper for pristine signal transmission.
- Lightweight Comfort: Addressing the common issue of heavy planar headphones, the FT7’s carbon fiber headband and housing keep weight to just 427g, ensuring a comfortable, fatigue-free listening experience.
What comes in the box?
FiiO’s product page lists these package contents:
- FT15 headphones
- 4.4 mm cable
- 4.4 mm female to 6.35 mm male adapter
- XLR-4 male to 4.4 mm female balanced adapter
- Protein-leather earpads and suede earpads
- Fabric storage case
- Packaging and quick-start guide
The launch announcement describes the two earpad types as dual tuning earpads. The included accessories do not establish that separate replacement pads or cables are available for purchase.
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- Large 90mm planar magnetic driver | 6μm ultra-thin diaphragm - Only 1/10 of the hair’s thickness
- Micron-level aluminium-silver alloy coil, Ideal combination of acoustics and easiness of power
- Open-backed design, A more natural sound, a more musical sound | Lightweight magnesium alloy construction, Reduced weight, better comfort
- 20 neodymium magnets per driver, Balanced force, for precise sound
- High sensitivity and easy to power: 110dB/1Vrms@1kHz | 96dB/mW@1kHz
What the launch information does—and does not—establish
The published specifications and package list describe the FT15’s design and what FiiO says is included. They do not establish how the headphones sound in independent testing, nor do they confirm current regional stock or sale prices. For those details, check an authorized seller in your market.
Quick Recap
Best Value
- 1. Premium South American Purpleheart Wood Housing Crafted from carefully selected Purpleheart wood with a unique grain and color. CNC carved, polished, and oiled through dozens of meticulous processes. Its exceptional hardness reduces resonance and enhances speed and purity of sound.
- 2. Wool + Wood Fiber Composite Diaphragm Made from European birch pulp reinforced with carbon fiber for rigidity, blended with wool fibers for tonal balance, and dyed a striking red. Delivers a natural, smooth, and emotionally rich sound signature.
- 3. Advanced Acoustic Engineering Closed-back design with -26dB passive noise isolation. Low impedance and high sensitivity for easy drive. Special W-shaped diaphragm increases vibration area and efficiency, while a U-shaped damping tube regulates airflow and strengthens bass.
- 4. Comfortable Fit with Premium Materials Adjustable magnesium-aluminum alloy headband with clear scale and smooth sliding. Two types of earpads included—sheepskin leather and suede—for different listening textures. Soft, breathable sheepskin headband reduces heat buildup during long sessions.
- 5. Complete High-End Accessories Furukawa single-crystal copper & silver-plated OFC hybrid cable with interchangeable connectors, compatible with multiple devices. Includes four plug options plus a durable carrying case, pouch, and cleaning cloth—everything you need in one package.
Rank #4
- Self-Developed 95×86mm Large Planar Driver JT9 features FIIO’s independently developed 95×86mm planar magnetic driver, providing natural advantages in soundstage, bass response, and dynamic performance. Carefully tuned for a spacious and relaxed presentation, it delivers powerful lows, clear highs, and excellent musical expression.
- Ultra-Thin 1μm Diaphragm – Fast & Detailed Response The specially designed 1μm ultra-thin diaphragm offers extremely fast transient response and accurate vibration control. It captures delicate musical details, micro-dynamics, and high-frequency textures with exceptional precision.
- Sapphire & Aluminum Dual-Coated Diaphragm Technology Using a high-performance PET base with sapphire and aluminum dual-layer coating, JT9 combines improved rigidity and electrical conductivity. The aluminum layer lowers impedance for easier driving, while the sapphire coating enhances high-frequency resolution and reduces unwanted resonance.
- Uniform Magnetic Field Design for Lower Distortion JT9 adopts FIIO’s optimized magnetic circuit technology to create a more evenly distributed magnetic field. This improves diaphragm movement consistency, reduces distortion caused by uneven vibration, and provides cleaner, more accurate sound reproduction.
- High Sensitivity, Easier to Drive With a sensitivity of 95dB/mW @1kHz, JT9 significantly lowers the driving requirements compared with traditional planar headphones. Enjoy high-quality planar sound with portable DACs, headphone amplifiers, or even compact audio devices.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
