Broadband reproduces by CCAW voice coil phi 53mm driver of the high input-resistant. By a large-diameter screwdriver of the new development to reappear to the powerful low level and beautiful medium- and high-levels area, I realize broadband reproduction. I adopt a honeycomb punching case made by aluminum and balance lightweighting with strength. Honeycomb punching having high opening rate smoothens a flow of the air in the case and plays a beautiful lingering sound. I pursue a light wearing feeling by 3D wing support. The toe Tarui-ya fitting design who controlled a feeling of pressure. I improve a feeling of fitting by the high durability and unpleasant pat of the moderate flexible raising material. I adopt an unpleasant pad of the raising material that gave three-dimensional sewing. In performing hold of an ear three-dimensionally of the low level fall out, and prevents it, and realize a feeling of comfortable wearing. OFC conductor single soup stock cord of the highly elastic TPE sheath adoption that I manage it and am easy to do it, and is hard to affect it.