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Mest Jet Black is a product from the UM MEST series. It continues the series' signature four-driver hybrid configuration while making significant breakthroughs in driver technology and tuning. For the first time, it features a ceramic shell and the newly developed Hybrid Bone Conduction system, along with an innovative bone conduction crossover technology. Listening to the Mest Jet Black is an experience of solemn power and unparalleled sensation.
Mest Jet Black The beginning...
Since its launch in 2019, the MEST series has been widely praised for its outstanding sound and bone conduction technology. After analyzing the strengths and weaknesses of the MEST series, we developed the all-new Mest Jet Black. Mest Jet Black is not just about a change in shell material—it represents a revolutionary advancement in technology. We have refined the sound, particularly the bone conduction component, to achieve a more open and intuitive bone conduction experience. These improvements are evident and have been thoroughly tested by audiophiles in the U.S., Japan, Korea, China, and beyond.
Innovative Material Selection
Following the philosophy of ultimate pursuit and meticulous craftsmanship, we chose a black ceramic shell for the Mest Jet Black. The ceramic shell is delicate, with a smooth, jade-like texture, earning it the name "Black Jade".
The manufacturing process for the ceramic shell and faceplate is extremely complex. It begins with zirconia powder processing, followed by sintering at 1600°C and multiple intricate procedures. The final product undergoes precise manual refinement and high-precision machining to achieve its stunningly refined texture. During the sintering process, the earphone size shrinks by approximately one-third, requiring rigorous verification and testing of design tolerances and final dimensions. Due to the high hardness of ceramic, diamond-tipped tools are necessary for milling, making the final processing stage highly challenging.
Reasons for Choosing a Ceramic Shell:
1. Enhanced Acoustic Performance – The high density of ceramic provides Mest Jet Black with superior acoustic properties, ensuring more stable sound transmission while reducing distortion and unwanted noise.
2. Excellent Sound Isolation – The ceramic shell effectively blocks external noise, allowing for a pure and immersive listening experience.
3. Exceptional Durability and Scratch Resistance – The material maintains its pristine appearance even after prolonged use.
4. Strong Antibacterial Properties – Compared to traditional materials, ceramic is environmentally friendly, recyclable, and hygienic.
5. Smooth, Comfortable Texture – The warm and refined feel of ceramic enhances wearing comfort.
In summary, the ceramic shell of the Mest Jet Black not only elevates its overall aesthetics and texture but also offers significant advantages in acoustics, noise isolation, durability, hygiene, and comfort, delivering an unparalleled experience for users.
Hybrid Bone Conduction System // Bone Conduction Crossover Technology
After six years of research and testing, UM has developed the revolutionary Hybrid Bone Conduction System and Bone Conduction Crossover Technology.
By refining the characteristics of composite balanced armature bone conduction drivers and piezoelectric bone conduction drivers, UM has seamlessly integrated both into a new hybrid bone conduction system. Through crossover technology, each frequency band is handled by dedicated drivers, reducing distortion and enhancing the detail of bone conduction compensation.
· Composite balanced armature bone conduction drivers focus on low and mid-frequency signals
· Piezoelectric bone conduction drivers handle high-frequency signals
Similar to air conduction, Bone Conduction Crossover Technology reduces the burden on a single driver to process the full frequency range, minimizing nonlinear distortion and resulting in a more natural sound. This advancement provides an unparalleled auditory experience.
With the strategic combination of two composite balanced armature bone conduction drivers and one piezoelectric bone conduction driver, UM has successfully pioneered a new Hybrid Bone Conduction System and Bone Conduction Crossover Technology.
