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FiiO FD15 in-ear monitors are dynamic IEMs featuring a magnalium diaphragm of no less than Ø13.8mm with DLC (Diamond-Like Carbon) gasket. Their 32 ohm impedance and 112dB sensitivity make them easy to drive. They benefit from a meticulous design using quality materials, resulting in a sound reproduction with immersive bass, clear mids and vocals, and detailed highs. FiiO has paid particular attention to the midrange and bass, bringing out the vocals in every audio recording.
The FD15s also feature MMCX connectors and come with a detachable cable (LC-RC 2024). The conductors of this cable are made of monocrystalline copper, with some strands silver-plated. Fiio has chosen an interchangeable 3.5mm jack and balanced 4.4mm jack termination for a high level of compatibility. As an added feature, among the many accessories supplied with the FD15 are two acoustic filters to accentuate either the bass or treble and personalize the listening experience.
The FiiO FD15 diaphragm is made of magnalium, an alloy of aluminium and magnesium, and DLC (Diamond-Like Carbon). The combination of these two materials offers spacious, transparent sound reproduction. Magnesium, being a relatively hard material, avoids high-frequency distortion, while DLC, known for its rigid yet flexible properties, brings a certain mechanical fluidity to improve the final sound reproduction.
The FD15's design incorporates a large Ø8.3mm voice coil. This enhances the FD15's efficiency and power capacity, resulting in improved transient response and timbre. As a result, the midrange is all the cleaner and more natural, bringing vocals to the front.
The FD15's special acoustic design lowers its resonance capacity at low frequencies, thus delivering deep, impactful bass.
The FiiO FD15 is powered by a detachable MMCX to interchangeable 3.5mm jack to 4.4mm balanced jack cable. This cable features single-crystal copper conductors with some silver-plated conductors. Each of the 4 conductors is made up of 100 copper strands and 20 silver-plated copper strands, for a total of 480 strands. This cable ensures optimum connection and signal transmission to the earphones.
The accessories supplied with the FiiO FD15 include two acoustic filters. One enhances bass and vocals for an emotionally rich experience, while the other enhances treble for detailed reproduction and ultra-clear mids.
Technical characteristics
Specifications | |
---|---|
Product type | In-ear monitors |
Diaphragm | 1x Dynamic driver |
Diaphragm diameter | Ø13.8mm |
Diaprhagme material | Magnesium + DLC (diamond-like carbon) |
Frequency response | 10Hz-40kHz |
Sensitivity | 112dB/mW (@1kHz) |
Impedance | 32Ω |
IEM connectors | MMCX |
Cable length | 1.2m |
Cable terminaison | Swappable: 3.5mm jack/4.4mm balanced jack |
General | |
---|---|
Color | Silver |
Weight | 12g/per earphones |
Package | 1x FiiO FD15 in-ear monitors 1x MMCX cable to interchangeable termination 1x 3.5mm jack termination 1x Balanced 4.4mm jack termination 2x Acoustic filters 3x Pair of ear tips |
Color | Silver |
Impedance (Ω) | 32 |
Efficiency / Sensitivity (dB) | 112.0 |
Lowest frequency (Hz) | 10 |
Highest frequency (Hz) | 40000 |
Wireless | No |