From driver parts such as the diaphragm, voice coil, magnet, magnetic circuit, and adhesives to production equipment, we have newly designed the 6mmφ dynamic driver unit "f-Core DU" for the A5000. The material of the driver front housing is brass, which is less affected by magnetic force and has a higher specific gravity than general aluminum. In order to improve the time response performance of the diaphragm, the voice coil uses 30μ ultra-fine CCAW and is assembled with a minimum amount of adhesive to thoroughly reduce the weight of the moving parts. Furthermore, by carefully pressing the diaphragm in a small lot, about 1/3 of the normal amount, we minimized the unevenness of the pressure and realized a uniform diaphragm without distortion.

The A5000 is based on the optimal housing design for IEMs established in the development of the B series, and achieves an even better fit. Whether or not the earphones are comfortable to wear is determined by the feeling of pressure. At first glance, the method of holding with the repulsive force of silicon, such as selecting an organic shape that promotes ergonomics, seems correct, but it always puts force on the ears, and before you realize it, it puts a strain on the ears and accumulates fatigue. To do. Compared to the shape that touches the ear with an organic large surface, the shape that limits the contact area aims for a feeling of wearing that does not feel oppressive. The A5000 housing is held at three points for a stable fit. There will be 1 point in the pink part (ear pocket) in the figure below, 1 point in the green part (earpiece), and 1 point in the blue part (tragus) for a total of 3 points. Therefore, it fits most people's ears. If there is no pressure at all points of contact, you will feel that the earphones are so comfortable to wear.