Aerospace engineering material for driver diaphragms The diaphragm is the heart of the sound production facility of earphones, determining the sound quality of the earphones to a great extent. To produce better sound, sound engineers have always been looking for a lighter yet stiffer material to transduce sound with less distortion. Filo has discovered that titanium, a material more often found in aerospace engineering, is very light, with high sound conduction speed, yet several times stiffer than steel; they have been able to design a full-range dynamic driver around this material with breakup frequency above the audible range, thus ensuring clear, even high frequency reproduction. Highly researched duralumin / stainless steel housing All components of the earphone housing are precision CNC milled, with the back made of anodized duralumin and the front stainless steel, the "beehiv" of tuning ports on the front being precisely sized and positioned to deliver the desired sound tuning properties. Nanotech titanium diaphragm driver Delivering even power response across frequencies and a natural yet energetic sound, the titanium diaphragm can handle high power without distortion while preserving exemplary transient response, unlike traditional dynamic driver diaphragms. Kevlar-strengthened high-purity multi-strand OFC cable The Ex1 headphone cable consists of 42 strands of high-purity OFC copper inte