The diaphragm is the heart of sound production for FiiO EX1 in-ear monitor, determining the sound quality to a great extent. Utilizing titanium, a material that is light weight with high sound conduction speed, yet several times stiffer than steel, we have been able to design a full range dynamic driver around this material, pushing breakup frequency above the audible range, thus ensuring clear and smooth high frequency production. Duralumin and Stainless Steel Housing All components of the earphone housing are precision CNC milled, with anodized duralumin for the back half, and stainless steel for the front half. The unique beehive tuning ports are precisely sized and positioned to deliver the desired sound tuning properties. The metal body assembly is designed to suppress resonance, preserving superior transient response for lifelike reproduction of live sound. Nanotech Titanium Diaphragm Driver Delivering even power response across all frequencies, and a natural yet energetic sound, the titanium diaphragm can handle high power without distortion while preserving exemplary transient response far superior to traditional dynamic driver diaphragms. Kevler Reinvorced Cable The EX1 headphone cable consists of 42 strands of high purity OFC copper, intertwined with 250D Kevlar fiber strands, ensuring superior sonics as well as great strain resistance and longevity. The outer sheathing is composed of medical-grade TPE for minimum microphonics and maximum bio-compatibility (avoiding skin allergies) Superior Ergonomics The EX1 employs an ergonomic offset nozzle design, with small rounded on-ear driver housing and shallow in-ear nozzles, ensuring long term wearing comfort. Since correct selection of eartips is crucial for comfort and sound quality, the EX1 comes with several sets of eartips in different sizes and designs to let you find the best fit, both physically and sonically.