The FiiO FD15 features a high-quality driver design with a magnalium diaphragm and DLC gasket, delivering spacious, natural sound and outstanding musical details. The diaphragm, a combination of magnesium and aluminum, ensures clear, detailed highs with low distortion, while the DLC gasket improves sound quality by reducing breakup. The innovative W-shaped gasket design increases the effective vibrating area for the 30%, resulting in a denser listening experience. With a large 13.8mm dynamic driver and a long Φ8.6mm voice coil, the FiiO FD15 improves electro-acoustic conversion efficiency and mid-range vocal quality. Housed in a 316L stainless steel housing, the FD15 is durable and elegant, with high-quality finishing techniques. The FiiO FD15 features high-quality Furukawa monocrystalline copper cables and offers two interchangeable sound nozzles: red for enhanced bass and rich vocals, and black for detailed, clear treble. The FD15 represents FiiO's commitment to acoustic excellence and offers an affordable high-quality listening experience.