They claim that fitting the driver within the nozzle part of these IEMs makes the sound less distorded and more "pure" since the driver sits deeper into the ear canal. Well, Yamaha is not exactly famous for their IEMs (and given the quality of their soundchips, I wasn't expecting the best), but I was really intrigued by the design that they used for these EPH-100, and the price was not too steep (140 Euros = 185 US$) so I got curious and ordered them.Ĭlaims : Yamaha has gone far from conventional IEM design for those: full aluminium body with chromium anti-corrosion plating, proprietary double flange silicon tips with a straight shape (not conical), and a 6mm closed dynamic driver which is fitted directly within the nozzles (see Yamaha schematics below). Equipped with Westone’s proprietary, high tolerance MMCX connectors ensure a reliable connection every time.Īcoustic Symmetry: Left and right earpiece responses are matched to an extremely tight 3dB tolerance.ĭesigned and Engineered in Colorado, USA: Meticulously designed by a staff of dedicated artisans and lab techs based in the USA.Please be nice with me, I'm not used to writing IEM reviews (and English is not my first language), although I have used a lot of IEMs in the last 4 years. Westone’s robust replaceable cable is constructed of bifurcated, high-flex, ultra-low resistance tensile wire, reinforced with a special aramid fiber, and braided for ultimate durability, acoustic transparency, and isolation from mechanical cable noise. As the pioneers in combining multiple balanced armature drivers with sophisticated crossover networks, Westone monitors provide enhanced sonic detail and frequency range that extends well beyond typical in-ear monitors.
Two Balanced Armature Drivers: Westone’s proprietary balanced armature drivers are significantly more compact and efficient than traditional dynamic drivers. Westone True-Fit Technology: 50+ years’ experience with in-ear applications has yielded a low-profile, lightweight, universal earpiece which delivers maximum comfort and in-ear coupling for dynamic transfer of sound. The dual balanced-armature driver design delivers robust low end and crystal clear highs, with all the detail and nuance that professional musicians have come to expect from a Westone in-ear monitor. Developed to reproduce a large and enveloping sound, the UM Pro 20 has the range and output for any stage condition. The new and improved dual driver, UM Pro 20 features two proprietary balanced-armature drivers, with a two-way passive crossover in an even more ergonomic and durable form factor.
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