Astell&Kern

Billie Jean In-Ear Monitors

Billie Jean is the latest collaboration of In-Ear-Monitors (IEMs) between Astell&Kern and Jerry Harvey Audio which feature a new Dual Balanced Armature (BA) driver system. It is another winning product created by combining the experience and know-how of Jerry Harvey's IEM design and the quality production of Astell&Kern.
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$349.00
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  • Billie Jean features the patented freqphase technology from Jerry Harvey Audio with a new internal sound bore design to bring clear and impeccably balanced sound from sub-bass to brilliance range. The new IEM shell has been optimized to fit nicely in the ear, utilizes a 2-way 2-BA design, Silver Tinsel cable and L-type plug in a small, compact package. The result is a brilliant pair of IEMs designed and built by Jerry Harvey, the inventor of custom-IEMs, and Astell&Kern, the global leader in Hi-Fi audio.

  • The "Billie Jean" applies Jerry Harvey Audio's patented "Freqphase" technology, which uses precisely cut tube lengths for each driver to minimize the phase shift of each frequency. This allows for the High, Mid, and Low drivers to be aligned to 1/100ms for the most ideal phase curve. It ensures the correct time alignment and phase of all drivers, resulting the most accurate music reproduction in the industry.

  • The Balanced Armature drivers used in Billie Jean are a customized BA only available from Jerry Harvey Audio and is designed to bring more power with less weight. Billie Jean will surprise you with efficient, yet powerful sound. Jerry Harvey Audio's Freqphase, Timephase, and Waveguide technologies allow this 2-way 2-BA IEM to deliver the full range of audio performance anytime. The special Acoustic Chamber Sound Bore design has been carefully crafted to bring a wide soundstage with incomparable dynamic range, without adding any interference.

  • Billie Jean is over 30% smaller compared to Michelle Limited. Its design has been optimized after a series of studies of different shapes of ear canals from both men and women of different ages. It fits and sits perfectly in your ears without bulkiness.

  • The cable used in the Billie Jean is not common copper. Instead, it is a copper cable plated with silver. The cable is manufactured by first compressing the silver plated copper wire, which is then flattened and rolled into a steady interval that is then used to wrap around the Kevlar. This newly developed cable has astounding tensile strength and delivers the full dynamic range of music. There is a 3.5mm Unbalanced cable provided.

More Information
Condition New
Ear Coupling In-Ear
Sound Profile Noise Isolating
Impedance 18 Ohms
Drivers 2way 2Drivers (High, Full Range(Mid & Low)) / 2BA per side
Operating Principle Closed-Back
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