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.

Billie Jean brings to life a real audio experience that will take your music to the next level.
Utilizing our experience of producing the award-winning SIREN Series IEMs, which is loved by music enthusiasts around the world, we were able to achieve a new level of accomplishment for those who enjoy a genuine music experience.

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.

2-Way 2-BA Drivers

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.

We highly recommend you try Billie Jean with your favorite tunes, which will never sound the same again.

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 Universal Fit Billie Jean is the perfect companion for Pro Audio applications such as sound monitoring. With the noise isolation design and the IEM know-how from Jerry Harvey Audio, you will get the best fit and comfort while you enjoy your tunes in a new way.