FiiO FD15 In-Ear Monitors

Magnalium diaphragm DLC gasket
With the FD15, we are sincerely bringing you into a new realm of sound. The all-new FIIO FD15, as the successor to the FIIO FD5, introduces a truly high-end driver design-a magnalium diaphragm DLC gasket driver. By innovatively combining these two materials, not only does the FD15 deliver a spacious and relaxed natural sound, but it does so while achieving new heights in the reproduction of musical detail for truly transparent sound.

W-shaped gasket
FIIO’s pursuit of acoustic excellence knows no bounds. The FD15 boldly embraces high-end audio design principles by introducing the W-shaped gasket design to earphones. Compared to conventional diaphragms of the same size, the FD15 boasts a 30% increase in effective vibrating area. With a larger effective diaphragm area and greater amplitude, the core acoustic unit can store more sound energy, delivering a denser and more solid listening experience.

“Tesla Valve” bass enhancement acoustic design
Inspiring new acoustic thinking, with special attention to immersive bass. The FIIO FD15 takes the lead by incorporating the F.T.B.S. ‘Tesla Valve’ bass enhancement acoustic design. Thanks to the high-precision powder metallurgy process used in creating the FD15, the length, angle, and quantity of channels within the earphone cavity are specially calculated to achieve a Tesla valve fluid structure that significantly enhances bass extension. Experience truly deep yet detailed bass.

Mid-range vocals, simply purely good

• 13.8mm large dynamic driver: Compared to the FD5, the effective diaphragm area has increased by 40%
• 8.6mm long voice coil: Voice coil lengthened by 1.38 times than the predecessor, driver power has boosted by 78%
• 1.5T external magnet design: The magnet volume has increased by 69.5%, with up to 1.5T high magnetic flux

316L stainless steel shell
Silver light flashes by, swift as a shooting star. The FIIO FD15 creatively combines a fresh design language with a closed-back acoustic design, utilizing carefully placed design surfaces flourishes to create an elegant and ever-changing play of light and shadow. To achieve this effect, the FD15 is made with 316L medical-grade stainless steel, which thanks to powder metallurgy sintering means the IEM is durable. It further undergoes meticulous hand-polishing and PVD electroplating for a premium finish, for a mirror-like visual sensation. Let its texture emotionally resonate with you.

Furukawa monocrystalline silver + Furukawa monocrystalline silver-plated copper braided headphone cable
Cut through the markups and get access to affordable high-quality cables. Since being featured with the FT3, cables made from Furukawa’s high-purity monocrystalline copper have been sought after by audiophiles around the world. The new FD15 also uses these cables, and comes standard with a Furukawa monocrystalline silver + Furukawa monocrystalline silver-plated copper braided cable. The cable consists of four large strands, each made up of 100 copper wires and 20 silver-plated wires for an overall total of 480 wires, which is unparalleled in its class. With a cross-sectional area of 22AWG and having undergone 1050°C high-temperature smelting, the included cable is truly of high-end quality but at an affordable price.