Sound Zero Series – transformation mechanism for KOYO armrests and headrests
| Articles: | Sound Zero Series |
| Durability: | 220 N·m /piece |
| Repetition cycles more than: | 10,000 |
| Movable Range with Gear Steps: | 30˚ (15 steps) 42˚ (12 steps) 54˚ (27 steps) 60˚ (30 steps) 72˚ (36 steps) 90˚ (45 steps) 108˚ (54 steps) 120˚ (60 steps) |
| Using: | Headrest, armrest |
| Minimum step: | 2° |
| Minimum order: | 10 sets |
| Manufacturer: | Japan |
“Silent Gear”: Angle adjustment is possible without operational noise.
Available as “spring type”:
The integrated spring prevents a pulling up of the cushion by the upholstery and pushes the cushion down, so it will rest in a flat position when released.


Modern upholstered furniture should combine stylish appearance, ergonomics, and maximum comfort. Today, buyers pay attention not only to the design of sofas and armchairs but also to the quality of the fittings. This is why manufacturers are increasingly choosing the Sound Zero Series mechanism, which provides virtually silent adjustment of headrests and armrests, is highly reliable, and is designed for a long service life.
What is the Sound Zero Series mechanism?
The Sound Zero Series mechanism is a modern transformation system from the Japanese manufacturer KOYO, designed for adjusting the headrests and armrests of upholstered furniture. The series’ key feature is Silent Gear technology, which allows for virtually silent tilt adjustments.
Silent operation makes this mechanism an excellent choice for furniture used in homes, home theaters, hotels, and other settings where comfort and quiet are especially important.
Advantages of the Sound Zero Series Mechanism
The popularity of the Sound Zero Series mechanism is due to its combination of innovative technologies and highly reliable design.
Key Advantages:
- virtually silent operation;
- smooth tilt adjustment;
- minimum adjustment step of 2°;
- highly robust construction;
- durability;
- reliable locking of each position;
- modern compact Design;
- Ease of integration into various furniture models.
These features allow the mechanism to be used in both mass production and premium furniture.
Where is the Sound Zero Series mechanism used?
Due to the versatility of its design, the Sound Zero Series mechanism is used in a wide variety of upholstered furniture.
The most common applications:
- Sofas;
- Corner sofas;
- Modular systems;
- Armchairs;
- Home theater furniture;
- Hotel furniture;
- Designer upholstered furniture.
Adjustable headrests and armrests significantly increase the comfort of use and make the furniture as convenient as possible for everyone. User experience.
Features of Silent Gear Technology
The main distinguishing feature of the Sound Zero Series mechanism is its use of Silent Gear technology. The mechanism emits virtually no sound when changing position, making the adjustment process extremely comfortable.
An additional advantage is the micro-adjustment step of just 2°. This allows the user to precisely select the most comfortable headrest or armrest angle. This precision significantly exceeds traditional furniture mechanisms with large adjustment steps.
Highly Reliable Design
The modern Sound Zero Series mechanism is designed for intensive daily use. The design can withstand significant loads and maintains stable operation even after thousands of adjustment cycles.
All parts are manufactured with high precision, ensuring smooth movement without play or distortion. High-quality materials ensure a long service life for the furniture without the need for mechanism maintenance.
These characteristics are especially important for furniture that is used daily by the whole family.
Why Choose the Sound Zero Series Mechanism
By choosing the Sound Zero Series mechanism, furniture manufacturers receive modern fittings that meet the highest market demands.
The main reasons to choose this mechanism:
- silent adjustment;
- high durability;
- smooth position change;
- minimal adjustment step;
- reliable fixation;
- modern appearance;
- Japanese quality workmanship.
The use of such fittings enhances the overall quality of furniture and makes it significantly more appealing to buyers.
Modern Trends in the Furniture Industry
Today, buyers expect furniture not only to be beautifully designed but also to be as comfortable as possible. Adjustable headrests are becoming standard for modern sofas and armchairs, and the silent operation of the mechanisms significantly enhances comfort.
The Sound Zero Series mechanism fully meets these requirements. Thanks to Silent Gear technology, the user can adjust the position of the furniture virtually silently, without disturbing others. This is especially important for families with children, hotel rooms, lounge areas, and spaces where quiet is paramount.
Furthermore, smooth adjustments make it easy to find the most comfortable position for relaxing, watching movies, reading, or working.
Reliable and Durable Operation
The high-quality Sound Zero Series mechanism is designed for long-term operation and maintains its original characteristics even with regular use. Its highly robust design ensures secure fixation of the selected position and stable operation of the mechanism.
Thanks to modern manufacturing technologies, the mechanism can withstand intensive use and remains functional for many years. This makes it an excellent choice for both home furniture and commercial projects.
Conclusion
The Sound Zero Series mechanism is an innovative solution for modern upholstered furniture that combines silent operation, high reliability, and maximum operating comfort. With Silent Gear technology, precise 2-degree adjustment, and a robust design, the mechanism delivers a high level of comfort and durability.
The Sound Zero Series mechanism allows for the creation of premium furniture that meets modern market demands and customer expectations. It is the optimal choice for manufacturers who strive to combine innovation, reliability, and comfort in every model.


