PRE-ORDER — Estimated shipping: September 25, 2026.

Order now to secure your unit. This is a pre-order item; your card will be charged at checkout and the product will ship on or around the estimated date above. Actual shipping date may vary based on manufacturer production and inbound schedule.

The FiiO FT15 is a flagship over-ear headphone featuring FiiO's innovative diamond diaphragm technology. With an ultra-thin 800nm diamond-coated diaphragm — 86.7% thinner than the previous generation — the FT15 delivers exceptional high-frequency extension, fast transient response, and minimal breakup distortion. The diamond material's inherent rigidity and stability ensure consistent, accurate sound reproduction over long-term use.

Why it stands out

Diamond Diaphragm Technology
The FT15 incorporates diamond — a cutting-edge material in acoustic design — into the diaphragm core. Diamond's exceptional physical properties provide superior rigidity and stability, fundamentally reducing high-frequency breakup distortion and ensuring the headphones maintain their sonic character over extended use.

800nm Ultra-Thin Diaphragm
The diaphragm thickness achieves a generational leap from micrometers to nanometers — at just 800nm, it is 86.7% thinner than the previous generation. This nanoscale thickness enables faster response speed, more precise signal reproduction, and richer harmonic detail retrieval across the entire frequency spectrum.

Large Dynamic Driver
Equipped with a large-diameter dynamic driver, the FT15 delivers powerful, authoritative bass response and a wide, immersive soundstage. The driver is carefully tuned to balance the diamond diaphragm's high-frequency clarity with rich, full-bodied midrange and deep, controlled bass.

Premium Build & Comfort
The FT15 features a premium headband and ear cup design with high-quality materials and comfortable ear pads for extended listening sessions. The over-ear design provides excellent passive noise isolation and a spacious, immersive listening experience.

Best for

• Audiophiles seeking exceptional high-frequency clarity and detail
• Listeners who value fast transient response and accurate timbre
• Users looking for a premium over-ear headphone with innovative driver technology
• Long listening sessions requiring comfort and immersive soundstage
• Anyone wanting a future-proof headphone with cutting-edge acoustic materials

Not ideal for

• Budget-conscious buyers looking for entry-level headphones
• Users who prefer warm, bass-heavy sound signatures
• Those needing active noise cancellation
• Portable/on-the-go use requiring ultra-compact design
• Listeners who want Bluetooth wireless connectivity

EMiUZEK Buying Notes

This listing is for the FiiO FT15 over-ear headphone. The FT15 features FiiO's diamond diaphragm technology and ships with standard retail packaging including the headphone, detachable audio cable, 6.35mm adapter, carrying case, quick start guide, and warranty card. Product images are for reference only; the actual product may vary slightly in appearance.

The FT15 is a wired headphone designed for use with dedicated headphone amplifiers, DAC/amps, and high-quality portable players. For optimal performance, pair with a quality amplifier capable of driving full-size headphones. The detachable cable design allows for aftermarket cable upgrades.

Specifications

FAQ

Q: What is diamond diaphragm technology?
A: Diamond diaphragm technology incorporates diamond — known for its exceptional hardness and stability — into the acoustic diaphragm. This reduces high-frequency breakup distortion and ensures consistent sound quality over time. The 800nm thickness is a generational leap from conventional micrometer-scale diaphragms.

Q: Does the FT15 require an amplifier?
A: While the FT15 can be driven by portable players and smartphones, a dedicated headphone amplifier will unlock its full potential, providing better dynamics, tighter bass, and more detailed highs. We recommend pairing with a quality DAC/amp for optimal performance.

Q: Is the cable detachable?
A: Yes, the FT15 features a detachable cable design, allowing for easy replacement or aftermarket cable upgrades. The package includes a high-quality oxygen-free copper cable and a 6.35mm adapter.

Q: What is the warranty policy?
A: The FiiO FT15 comes with a 30-day replacement and 1-year warranty. If you experience any non-artificial quality issues within 30 days of receipt, we will replace the unit free of charge. Within one year, enjoy free warranty service. Artificial damage (drops, water exposure, unauthorized disassembly, etc.) is not covered.