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Fiio FDX 14th Anniversary Pure Beryllium Diaphragm Dynamic Driver IEM Earphone MMCX Swappable Plugs 2.5mm 3.5mm 4.4mm

[Features]

+ Pure Beryllium Diaphragm Dynamic Driver
+ Semi-open Acoustic Design
+ Exclusive Wooden Case
+ 24k Gold Plating
+ High-purity Gold-Silver-Copper Hybrid Braided Cable
+ Front Acoustic Prism
+ Unique Serialized Number
+ Twist-lock Interchangeable Audio Plugs

FiiO FDX is an IEM earphone created in commemoration of FiiO's 14th Anniversary. Uniquely serialized and limited to 1000 units, it is the epitome of craftsmanship, cutting-edge technology and elegant design truly demonstrating of FiiO's journey thus far in personal audio.

The FDX is equipped with FiiO's latest flagship pure beryllium diaphragm dynamic driver that features exceptionally swift transient response and remarkably rich sound. This is due to its tremendous rigidity and extraordinary light weight being 4x more rigid than steel and 1/4 of the weight of titanium.

[Specifications]

Type: 1 Dynamic Driver
DD: 12mm Pure Beryllium Diaphragm Dynamic Driver
Frequency Response: 10Hz to 40kHz
Sensitivity: 111 dB/mW (@1kHz)
Impedance: 50 ohms (@1khz)
Plug: 2.5mm BAL / 3.5mm S-E / 4.4mm BAL
Cord Length: 1.2m
Weight (per earbud): about 11g (excl. the cable)
Colour: Gold
Detachable Cable Design: MMCX Standard Connector