The culmination of many years of technology, special plywood is mixed with brass and copper, soaked into the plywood, and coated on the surface!

The inner baffles manufactured by our shop, which boasts a history of over 20 years, have never been corroded by water, and the inner baffles that were installed over 10 years ago can be used as they are without any change in thickness.
The feature is that the baffle is coated with a coating resin made from a mixture of brass and copper powder, which improves the desired functionality and sound quality such as durability, water resistance, and antiseptic effect.