Electrostatic IEMs are no longer a novelty in the high-end IEM landscape, but the FX15 is FiiO's first step in producing such a product. In developing the FX15, FiiO's R&D team spent considerable time researching the best way to use electrostatic drivers. Because of the low sensitivity of such drivers, special care must be taken to ensure that they are not drowned out by the other dynamic and BA drivers used. Otherwise, listeners will not be able to fully experience the unique sound that electrostatic drivers have to offer.
"Dare to be at the top" is an important part of FiiO's corporate culture. FiiO uses new techniques or materials not just to attract attention with new gimmicks, but chooses to fully research new methods to come up with products that fully exploit the potential of such new approaches. In a sense, being slow means being faster in the end. The development of the FX15 embraces this ethos, as the FiiO R&D team has carefully ensured that dynamic, balanced fixtures and electrostatic drivers work in harmony to fully bring out the best of the latter, before choosing to release this new IEM.
Warranty | 24 Months |
Weight | Approximately 6g (per unit) |
Scope of delivery | FX15, HB5 Case, Silver-plated Audio Cable, Interchangeable plugs (3.5mm/4.4mm), 19 Pairs of Earbuds, Magnetic Clip, Cleaning Brush, MMCX Tool |
Impedance | 24 Ω (@1KHz) |
Frequency Range | 20Hz - 40kHz |
Sensitivity | 103 dB (@1mW) |
Bluetooth | No |
Battery | N/A. |
Noise Cancelling | No |
Drivers | 1 x Knowles BA, 1 x 10mm DLC DD, 4 x Sonion EST |
Cable | 1.2m (MMCX) |
Connection | 3.5mm / 4.4mm |
Type | In-ear |
Soundbox | Closed |
Operation | N/A. |
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