Delivers natural sound teeming with realism that you could listen to forever through the metal powder injection molding method MIM.
Along with the special attribute of final audio design products - a vast sound stage - Heaven VIII has succeeded in the reproduction of the vivid yet lyrical bass tones radiating from musical instruments. Usually, increasing the range of bass tones results in a dull resonance across the full sound range. Here, owing to
the employment of MIM (Metal Injection Molding), a special metal working process, a housing
that optimizes acoustics not possible through regular machining is achieved; coupled with a newly specified single driver unit, it has been possible to heighten bass reproduction while preserving clarity. With a never before experienced volume of sounds and sense of depth, you can experience an overwhelming sense
of realism. The back design is not merely for decoration either. Resonance dispersion has been factored into the design, making for a high-level balance between beauty and function.
* MIM (Metal Injection Molding)
Fine metal powder is mixed with a binder, and after molding this with a die as is done with resin, the form is sintered in a furnace at an exceedingly high temperature. Freedom of form and precision are high with
this method, but it is difficult to finish the surface, and hence the process is not often used for parts whose external appearance is displayed.
BAM mechanism produces bass sounds and stereo spatial interpretations
With balanced armature driver units, iron is driven to produce sound, and as such, these drivers face a number of problems, amongst which are "proving tiring to listen to" , "having sound that is subtle and beautiful, but lacking in depth and being flat" and "lacking bass interval". At final, we decided to focus on developing technology for the reproduction of bass tones and three-dimensional space with the full-range reproduction of a theoretically unproblematic single driver unit, rather than taking things in a multiway direction. We went back to the beginning and reviewed the performance of the balanced armature driver, focusing our attention on something we had previously overlooked ? airflow inside the housing. We developed BAM (Balancing Air Movement), a mechanism that optimizes airflow inside the housing through the creation of an aperture in
the driver unit, which is usually sealed.
While achieving bass tones and deep, three-dimensional spatial representation, which proved difficult with single driver full-range reproduction, we achieved a BA type that at the same time made for natural listening the user doesn't tire of.
Full-range balanced armature driver
Compared to other products in the Heaven series, the driver unit employed here is superior in terms of bass tone reproduction. In principle, this makes for ideal full range reproduction with a single driver.
Stainless steel housing utilizing MIM (Metal Injection Molding)
MIM is a method whereby fine metal powder is mixed with a binder, and after molding this with a die as is done with resin, the form is sintered in a furnace at an exceedingly high temperature and the shape is reconciled. As with molded plastic products, there is a great deal of freedom of form with this method, although it was necessary to solve problems arising with the method such as precision control owing to
the 20-30% degree of shrinkage that occurs and the difficulties involved with achieving a surface finish
at a level acceptable for outer casings. We solved the problems related to MIM using technology we cultivated during the development of titanium earphones using a 3D printer. By making the housing two simple parts, we were able to control the resonance of the housing to the utmost. The back design is not merely
for decoration ? it is a form that works to disperse resonance.
Stainless mesh filter + acoustic resistor
With stainless steel mesh and an acoustic resistor, balance is achieved between medium and high tones.
Original elastic cable eliminates "touch noise".
Enhancing the flexibility of the cable and increasing its thickness results in a decrease in touch noise.