The KD-Q1 is a product developed based on the technology that KuraDa has cultivated over the years. It embodies the philosophy of "Always be innovative" and is designed with the theme of "Solid and Sturdy". It meets all the elements required of headphones at a high level, including sound quality, durability, and wearing comfort.
■ Adoption of 3D Printing Technology
The KD-Q1 is the first KuraDa product to adopt 3D printing technology. Compared to traditional SM technology (Subtractive Manufacturing), AM technology (Additive Manufacturing) offers a high degree of design freedom, making it possible to manufacture products with complex internal structures.
・3D Printing with HP Jet Fusion
The parts of the KD-Q1 are manufactured using HP's Multi Jet Fusion method. This technology sprays high-precision liquid agents onto powder material, forming layers by adding heat. This allows for the mass production of complex-shaped parts quickly and with high precision.
・Adoption of PA12GB for the Housing Material
The KD-Q1 uses PA12GB (polyamide 12 glass bead filled) material. This material, which contains 40% glass beads based on PA12, has high tensile strength and durability, maintaining its performance even after long-term use. It also shows resistance to chemicals, lightweight properties, and excellent vibration absorption.
■ Acoustic Design Features
Ultra-Responsive Diaphragm (URD Driver)
The KD-Q1 is equipped with a 53mm dynamic driver called the "URD Driver". Using a thin PET diaphragm and OFC voice coil, it achieves light weight and high responsiveness, significantly improving the characteristics of the low-frequency range. Key features include:
・Lightweight Diaphragm
The PET diaphragm is made very thin, achieving both light weight and high responsiveness.
・OFC Voice Coil
The adoption of the OFC voice coil increases the mass of the vibration system, lowering the f0, while the thin diaphragm minimizes the increase in mass, balancing the overall weight and damping ratio. The OFC voice coil has about 30% higher conductivity than CCAW (Copper Clad Aluminum Wire) voice coils, leading to better responsiveness due to lower resistance.
Newly Developed 3D-Sewing Earpads
The KD-Q1 features newly developed 3D-sewing earpads. These earpads are cut into three-dimensional shapes from low-resilience urethane and designed ergonomically to naturally fit the head. They minimize sound leakage and optimize pressure propagation to provide excellent acoustic characteristics. Additionally, the parts that touch the ears use highly durable protein leather, ensuring comfort even during long-term use.
Band Design for Comfortable Wearing
The housing of the KD-Q1 is designed to balance comfortable wearing and high acoustic performance. The lightweight clamping design ensures comfort even during long use, and combined with the 3D-shaped earpads, it improves comfort while maintaining a good seal.