Building on the success of the FD5, the silver FiiO FD15 Dynamic In-Ear Monitor Headphones feature numerous design enhancements that provide clear highs, powerful midrange, and deep bass. With its enlarged diaphragm (13.8mm), W-shaped gasket, longer voice coil, and more powerful magnet, the FD15 provides greater detail for a truly high-end listening experience. Other notable enhancements include the F.T.B.S. Tesla Valve for bass enhancement and a frontal acoustic prism to enhance high-frequency diffusion for adaptive phase consistency and precision control over the sound waves.
The FD15 includes a Furukawa monocrystalline silver-plated copper braded headphone cable to deliver audiophile quality audio to the earphones. The cable attaches to the earphones via MMCX connectors, while the other end features straight twist-lock swappable audio plugs (3.5 and 4.4mm), allowing you to connect to consumer and high-end balanced playback devices. The FD15 also includes 14 pairs of eartips, an MMCX quick release tool, a cleaning brush, two swappable sound nozzles, and a storage case.
- Introducing a truly high-end driver design—a magnalium diaphragm DLC gasket driver. By innovatively combining 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.
- Magnalium diaphragm, a scientifically calculated blend of magnesium and aluminum, features high hardness and low distortion when moved for clear, detailed treble. The DLC gasket is made from carbon, which is known for being both rigid yet flexible and provides less breakup during movement and ultimately higher-quality sound.
- The FD15's acoustic design has been specifically optimized so that when the air pressure inside the earphone cavity flows from the inside to the outside, the specially calculated length, angles, and quantity of the channels result in the air flow exhibiting a change in viscosity, which effectively lowers the cavity's resonant frequency for truly deep-reaching and impactful bass.
- When the alternating airflow from the outside flows inward toward the earphone, it is not hindered, allowing for the internal air pressure to be quickly and adaptively balanced. This allows the driver to work at its best.