Astell&Kern x JH Audio Billie Jean – High-End In-Ear Monitor with Freqphase™ Technology

Professional sound for audiophiles and musicians

The Astell&Kern x JH Audio Billie Jean is the result of a collaboration between Astell&Kern and Jerry Harvey Audio, one of the world's leading developers of professional in-ear monitors. This high-quality 2-way in-ear headphone combines state-of-the-art balanced armature technology with patented Freqphase™ wave guide technology, offering exceptionally precise, dynamic, and natural music reproduction.

Whether for audiophile music lovers, ambitious musicians, or professional monitoring – the Billie Jean delivers reference-grade sound in a compact and comfortable design.

Two balanced armature drivers for maximum precision

Inside the Billie Jean, two perfectly matched balanced armature drivers work in tandem.

The specially developed woofer provides punchy and controlled bass, while the tweeter reproduces the finest details with minimal distortion. Together, they create a balanced sound image with high resolution, excellent dynamics, and impressive naturalness.

Patented Freqphase™ technology

A special highlight of the Billie Jean is the Freqphase™ technology developed by Jerry Harvey Audio.

In conventional multi-way in-ears, the signals from individual drivers often arrive at the ear at different times. Freqphase™ compensates for these latency differences via precisely calculated sound channels, synchronizing all frequency ranges to within 1/100th of a millisecond.

The result is exceptionally precise imaging with realistic spaciousness, perfect phase coherence, and impressive instrument separation.

Wide soundstage through an innovative acoustic chamber

The specially developed acoustic chamber from Jerry Harvey Audio expands the spatial representation and ensures an especially open soundstage.

The combination of Freqphase™, Timephase™, and waveguide technology creates exceptionally natural music reproduction with high dynamics and precise localization of individual instruments.

Ergonomic universal-fit design

Numerous studies on the anatomy of different ear canals were conducted for the Billie Jean.

The result is an ergonomic universal-fit housing that sits securely and comfortably in the ear. Even during long listening sessions or professional monitoring applications, the Billie Jean impresses with its high wearing comfort and secure fit.

High-quality silver-plated copper cable

Included in the scope of delivery is a specially developed silver-plated copper cable, which enables particularly low-loss signal transmission.

The robust cable uses high-quality reinforcing fibers such as Kevlar, Zxion, and Technora, which ensure exceptional stability, high tensile strength, and maximum durability.

Depending on the version, a balanced 2.5 mm cable is also available for use with high-quality Astell&Kern digital audio players.

Designed for the highest sound quality

Thanks to the high-quality balanced armature drivers and precise signal routing, the Billie Jean impresses with an exceptionally linear tuning across the entire frequency spectrum.

Powerful bass, natural mids, and brilliant highs merge into a balanced sound image that delights both music lovers and professional users.

Perfect addition for Astell&Kern digital audio players

The Billie Jean was specially developed as an ideal partner for the high-quality digital audio players from Astell&Kern.

Due to its high sensitivity, precise tuning, and excellent detail resolution, it exploits the full potential of high-resolution music formats and delivers an authentic hi-fi experience at a reference level.

Highlights of the Astell&Kern x JH Audio Billie Jean

• High-end in-ear monitor in collaboration with Jerry Harvey Audio

• 2-way system with two balanced armature drivers

• Patented Freqphase™ technology for perfect time and phase alignment

• Timephase™ and waveguide technology

• Wide and precise soundstage

• Ergonomic universal-fit design

• High-quality silver-plated copper cable

• Robust Kevlar, Zxion, and Technora reinforcement

• Optionally available with a balanced 2.5 mm cable

• High detail resolution and exceptional dynamics

• Ideal for audiophile music lovers and professional monitoring

Conclusion

The Astell&Kern x JH Audio Billie Jean combines the decades of experience Jerry Harvey Audio has in professional in-ear monitoring with the uncompromising sound philosophy of Astell&Kern. Thanks to balanced armature technology, patented Freqphase™ signal routing, and high-quality workmanship, the Billie Jean offers exceptionally precise, dynamic, and natural music reproduction. For audiophiles, musicians, and discerning listeners, it is a high-end in-ear headphone that delivers sound quality at a reference level.

For hygienic reasons, this item cannot be returned or refunded once the packaging has been opened.

Herstellerangaben:

Dreamus Company | Astell&Kern Unit
5, Bangbae-ro 18-gil, Seocho-gu
Seoul , Guangdong Province
South Korea
info@astellkernservice.de

Verantwortliche Person:

Hugo Park; Dreamus Company | Astell&Kern Unit
5, Bangbae-ro 18-gil, Seocho-gu
06664 , Seoul
South Korea
info@astellkernservice.de