[Machine Translation] What we aim for is the purest quality. Sound quality and total dignity. The 10th generation of the W Series pursues the sound of nature's magnificent reproduction. The clear tones resonating in the wood housing can be enjoyed to your heart's content with a light wearing feel. The hard, dense black cherry wood used for pianos and concert halls is used. Magnetic circuit consisting of two partsMetal parts (yoke) are integrated to increase magnetic flux density for efficient music reproduction. The unit diameter is, of course, a large 53mm. By not directly fixing the magnesium frame to the wood case, unwanted vibrations from the unit are less likely to be transmitted to the wood case, bringing out the true sound of the wood. ( Product Specifications and Description ) / Solid black cherry machined housing is used. / Integrated yoke 53mm large-diameter driver designed for high sound quality. / Floating mounting system that brings out the true sound of wood. Newly developed 3D wing support improves the wearing comfort. Lightweight magnesium alloy baffle and frame. Highly elastic elastomer sheath and PC-OCC conductor cord for tangle resistance. 6.3mm dia. gold-plated standard plug with wooden sleeve for better sound quality. Technical Data Type: Sealed dynamic driver: 53mm, 6N-OFC voice coil Housing: Solid American black cherry wood Output sound pressure level: 100dB/mW Playback frequency range: 5~42000Hz Maximum input: 2000mW Impedance: 42 Omega Mass: Approx. 350g (Plug: 6.3 gold-plated stereo standard cord length: TPE/PC-OCC/3.0m (both ends) (Subject to change without notice for improvement. )