FiiO FD5 Hybrid In-Ear Monitors FiiO has released its latest single dynamic driver pair of in-ear monitors, the FiiO FD5. The stainless-steel earpieces look stunning and house a DLC (Diamond-Like Coated) Beryllium coated dome diaphragm dynamic driver unit. If you are looking for powerful flagship-grade sound quality, the FD5 is the right choice for you. Best Configuration for Best Sound Quality FiiO has spared no effort in creating their new flagship product, in the FD5 is a newly developed large 12mm dynamic driver utilizing N52 magnets with a high magnetic flux of 1.5 Tesla – for extremely robust bass and excellent high frequency resolution. It features a Diamond-like coated diaphragm and a beryllium coated dome, both these rigid and flexible materials complement each other and results in swift sound conduction and internal damping. Overall the frequency response is balanced and distortion is minimized at all frequency ranges. Stunning Design The earpieces in FiiO FD5 are beautifully crafted. They are made up of high-quality stainless-steel material that is durable and solid with a lustrous finish. The semi-open back structure gives room for air pressure inside the cavities. This allows swift movement of the moving coil resulting in a distortion-free smooth sound with powerful bass slams. Dual-Cavity Acoustic Structure To provide a distortion-free sound output, acoustic teams at FiiO has designed the FD5 with a dual cavity structure. The front cavity acoustic prism enhances the high-frequency diffusion and phase adjustment function, which allows precise control of the sound wave. The back cavity features a semi-open back design that manages the air pressure inside the chambers. Interchangeable Sound Tubes Great sound comes from a great fit, which is why the FD5 comes with interchangeable sound tubes in small and large sizes t best fit your ear. The large sound tube is balanced, while the small sound tube presents a lively, more base focused sound. *FiiO recommend the small sound tube to be used with the triple-flange ear tips, for deeper insertion and better sound quality. Audiophile-Grade Cable With Interchangeable Termination Plugs The FiiO FD5 features a replaceable cable with universal MMCX connectors, it comes bundled with a high-quality silver cable with replaceable termination plugs. The package includes 2.5mm balanced, 3.5mm single-ended, and 4.4mm balanced termination plugs.