The Final Audio A10000 is a flagship in-ear monitor featuring a genuine diamond diaphragm that reduces distortion to a minimum. Its stainless steel housing is finished with the "Côtes de Genève" decoration, renowned in watchmaking. Sonic excellence and aesthetic appeal are seamlessly integrated here.

Diamond as the ideal diaphragm material

Diamond possesses a very high speed of sound and immense rigidity – perfect conditions for a loudspeaker diaphragm. In particular, its extraordinary flexural rigidity was crucial to realizing the "ultra-low distortion" driver we aimed for. Using a laser displacement meter, it can be observed that conventional rigid diaphragms deflect in various directions, thereby creating distortion. With diamond, this deflection is extremely small due to its rigidity, effectively suppressing unwanted vibrations of the diaphragm surface.

For this model, we use a "True Diamond" film: diamond is crystallized on a silicon substrate, after which the silicon is removed, leaving behind a genuine diamond film.

Newly developed surround

With a density of approx. 3.5 g/cm³, diamond is about twice as dense as beryllium. This posed the risk that conventional surround materials would not be able to keep up with the diaphragm's weight and would "roll away." Furthermore, common surround materials tend to resonate at specific frequencies. We therefore use a special polyurethane that overcomes the disadvantages of conventional PU surrounds—specifically their rapid aging. The material combines low weight with high elasticity and dampens unwanted resonances without restricting the free movement of the diaphragm.

Forming the diaphragm without adhesives

Instead of gluing the diaphragm and surround as is customary, we have developed a unique forming process that combines pneumatic and thermal molding. The connection is made at a molecular level without adhesive. In this way, we eliminate batch variation caused by glue quantities and differences in the bonding surface—problems that are nearly impossible to avoid with conventional methods.

Redesigned voice coil

To ensure the diaphragm guided by the flexible surround performs a clean piston motion, the construction of the voice coil, usually fixed with glue, was redesigned. We use a "coil-in-coil" construction (dual-layer wound voice coil) with high conductivity. This prevents weight fluctuations and distortion caused by varying amounts of adhesive.

Result: Ultra-low distortion driver

Through the combination of new materials and manufacturing technologies, the newly developed diamond driver achieves a distortion rate in frequency ranges below 100 Hz of less than 1/100th that of the conventional model.

The drastically reduced distortion and improved amplitude/frequency characteristics in the deep bass result in unprecedented bass precision. At the same time, the mid and high frequencies benefit: transients are reproduced more cleanly, and the mid/high range appears transparent and rich in detail. The enormous resolving power reveals the finest information while maintaining clear separation of individual instruments—regardless of which frequency range one focuses on. Since there is practically no audible distortion, the silence between the notes feels more intense, and individual tones stand out more clearly.

Milled stainless steel housing with "Côtes de Genève"

The housing consists of high-strength, precision-milled stainless steel. It optimally stabilizes the driver and suppresses unwanted housing vibrations, which sharpens the contours of the reproduction.

For the surface finish, the elaborate, wave-like precision milling process "Côtes de Genève" (known from luxury watchmaking) is used. In addition to its aesthetic impact, the milled structure provides a defined surface geometry that differs significantly from polished surfaces.

Maintenance-friendly design for long-term use

Adhesives are largely avoided during the assembly of the housing and the DU unit. Instead, screw connections are used. This not only facilitates long-term repairs but also increases structural stability through defined screw pre-tensioning and reduces the resonances of each individual assembly.

Housing:
Stainless steel

Driver:
Dynamic with True Diamond diaphragm

Connector:
MMCX

Cable:
ePTFE-coated silver, 4.4 mm jack plug

Sensitivity:
99dB/mW

Impedance:
13 Ω

Weight (pair):
63 g

Cable length
1.2 m

Herstellerangaben:

final Inc.
4-44-1 Nakasaiwaicho
Saiwai Ward, Kawasaki
212-0012 , Kanagawa
Japan
directshop@final-inc.com

Verantwortliche Person:

ATR – Audio Trade HiFi – Sales Company LLC
Wallufer Strasse 2
65343 , Eltville am Rhein
Germany
info@audiotra.de