FIIO FP3 In Ear Monitors (Walnut)

After years of meticulous work, FIIO has created the FIIO FP3, featuring a second-generation, entirely self-developed 14.5mm planar driver. The diaphragm thickness is merely 1μm, the thinnest among its peers, achieved in part thanks to FIIO’s new dual-coating patented technology. The driver was designed to deliver excellent sound quality and impressive dynamics. The FP3’s appearance draws inspiration from a “mini wooden bowl.” Prominent on the FP3 is a pure wood faceplate, with options for rosewood or black walnut finishes. Each earbud weighs only about 6.5g and features ergonomic enhancements for comfortable and worry-free wear. The FP3 is equipped with FIIO’s second-generation, self-developed 14.5mm in-ear planar driver. The planar driver has been designed from the ground up by FIIO, from the diaphragm to the patented dual-coating, to the conductive trace width, to the fine-tuning of the magnetic circuit, and even the standardized bracket fixings. Compared to typical off-the-shelf drivers, the self-developed driver can be completely customized to build and fit around it a sophisticated acoustic system, allowing the driver to achieve significant breakthroughs in sound quality. Engineers have constantly strived to achieve thinner and lighter diaphragms for planar drivers. After two years of independent research and development, we have created a class-leading 1μm ultra-thin diaphragm, using high-performance PET as the substrate. The difference between even a 2μm and a 1μm diaphragm thickness results in noticeable performance differences when the diaphragm is vibrating at high speeds, which ultimately affects sound quality. The FP3’s 1μm ultra-thin diaphragm is exceptionally lightweight, allowing it to respond with lightning-quick speed. It faithfully reproduces even subtle sounds in the ultra-high frequency range, as well as providing exceptional dynamic range. The FP3’s driver is made using a 28 nm-grade process. This technique completely isolates the conductive trace material from the surrounding air. The trace material exists in a vacuum state at a pressure of 6.6 × 10-³ pascals, and the temp is raised to 120°C. The trace material is transformed into ionized particles that accumulate on an ultra-thin 1μm film through charge attraction principles. This process creates the desired coating thickness for optimal acoustics and significantly enhances the durability and lifespan of the traces. The FP3 have this complex and rigorous process done twice to each diaphragm, resulting in a dual-coated membrane design that delivers exceptional sound quality. The conductive traces on the FIIO FP3’s planar driver were designed according to the force principle acting on a coil in a magnetic field, F = BIL*. FIIO leveraged a high-precision 28 nm-grade manufacturing process, allowing the conductive traces on the FP3’s driver to be a width of merely 0.055mm - as thin as a strand of hair. By making each individual trace narrower, FIIO can pack more traces more densely within the effective magnetic field. The total length of the FP3’s traces is 486.5 mm, significantly enhancing the driving force experienced by the diaphragm while simultaneously improving headphone sensitivity. In order to achieve a comfortable and lightweight design, the development team decided to place 7 N52 high-performance neodymium magnets on both sides of the FP3’s driver. These magnets are arranged in a 7x2 pattern, totalling 14 in all. The balanced placement of these magnets allows the dual-coated traces to be distributed evenly within the magnetic field. This completes a matrix-style magnetic circuit system, ensuring that the diaphragm experiences balanced forces on both sides. As a result, the diaphragm does not move in irregular ways, which reduces distortion and achieves high-fidelity sound. The FIIO FP3 comes equipped with high-purity silver-plated copper wire. 14 individual wires are twisted together to form a smaller strand, and every 7 of these smaller strands are further twisted to create a larger main strand. In total, there are 392 silver-plated copper wires. Each strand is individually enamelled and insulated with enamel, and the wires are braided in Litz fashion. This design increases the conductive surface area, effectively enhancing high-frequency resolution. The FP3 features an L-shaped 0.78mm 2-pin detachable cable, and the headphone connectors and cable have an ergonomic design to maximize wearer comfort.