By removing useless edge lines and parts and connecting the driver (a perfect circle) and the cable (a square) in the shortest distance, the stiffness and comfort of the earphone body is increased. In addition, the rear housing is designed as a cone shape so that sounds will diffuse in different directions and disperse efficiently. In this way, a neutral and minimal form was achieved, making the features of this product stand out to a maximum extent. For the CB1000 series holder ring using MMCX, anodized aluminum knurling is adopted to allow easy attaching / detaching, which creates a luxury feeling.