The FiiO FD3 Pro is an in-ear earphone with dynamic driver and semi-open acoustic design. FiiO has made the driver diaphragm from Diamond-Like Carbon - carbon that is almost as stiff as a diamond. The diaphragm is exceptionally light and responds particularly quickly to impulses. As a result, the FiiO FD3 Pro is able to reproduce music with fine resolution and free of discoloration. The diaphragm is driven by a 1.5 Tesla magnet for very robust bass and excellent high-frequency resolution. The semi-open design allows for a particularly natural sound and by equalizing the air pressure, there is less pressure on the eardrum, so there are no signs of fatigue even after hours of listening to music.

The housing of the FD3 Pro is made of very lightweight aluminum and magnesium, and the top is also finished with 2.5D glass for a great look. The high-quality braided earphone cable has MMCX connectors and comes with three interchangeable plugs - 2.5mm balanced, 3.5mm and 4.4mm balanced. So you're ready for virtually any playback source. Good sound goes hand in hand with an optimal fit, which is why the FD3 Pro earphones come with various ear tips in different sizes and shapes and with different sound signatures. For further sound customization, the scope of delivery includes two interchangeable sound tubes: the larger black sound tube provides particularly detailed highs, while the smaller red sound tube delivers a robust bass. You also get a sturdy hard case where you can safely store and carry your earphones with accessories.