HIFIMAN PLANAR MAGNETIC TECHNOLOGY

Hifiman is an industry leader in research & development, constantly reinventing what is possible today so that we may enjoy the most satisfying music reproduction experiences.

Following are some of Hifiman's technological advances over the past 10 years, advancing  the goalposts of what is possible in personal audio.

 

UNVEILED - 2024 Latest Leap Forward

The fully open-back design of the UNVEILED planar headphone models eliminates the negative effects of sound wave reflection, an obstacle that impairs sound quality. Debuting on the Susvara Unveiled, the models are named UNVEILED because the depth and inherent beauty of the music are unveiled to the listener. 

Since the nanometer thickness diaphragm is sensitive to reflected sound waves, it is necessary to further increase the openness of the back of the headphone.

Over the past several years Hifiman has implemented various 'window shade' grilles, to reduce these reflections as much as possible. This was the inspiration for the UNVEILED models' removable back panel. 

To move beyond a reduction in reflections than the 'window shade' design can achieve, with precise design we have been able to shape the magnets and redesign the ear cup around the new Unveiled technology, with virtually no rear grille! 

The reduction in rear reflections further reduces distortion for an even more lifelike listening experience. When not being used, the magnetic shields (shown above, left) must be placed on the outside of the ear cups in order to maximize the headphone's long life. 

 

NANOMETER GRADE DRIVER

Extremely low distortion, extremely high transient response, comprehensive improvement of dynamics and details. For many years, HIFIMAN invested extensive resources into Nanometer
Grade diaphragm research and development. This core technology has been further refined in the design of the UNVEILED models. 

The production, processing and installation of diaphragm materials is highly complex. In addition to achieving a balance of great strength and low mass, it is combined with Stealth Magnets technology to achieve the goal of excellent sound quality.

The thickness of the HE1000 UNVEILED’s diaphragm, for instance, is under a millionth of a meter. It is extremely light, gives the headphone extreme responsiveness with outstanding dynamic range and frequency characteristics.  The nanometer thickness diaphragm material is essential to the sonic output being clear and non-fatiguing, even after hours of listening.

 

STEALTH MAGNET DESIGN

In traditional designs, the magnets get in the way of the sound waves through reflection and diffraction, creating constructive and destructive interference that has a negative impact on the sound.

HIFIMAN's use of Stealth Magnets means the sound wave reproduction takes place without the magnets getting in their own way and ruining the sonic purity of the output. The special shape & taper of the magnets allows audio waves to pass through without generating interference.

(Stealth Magnet - note the smoothly contoured edges on the magnets in image above)