Via Tatsuyoshi Moriyama. Sugano's dream system of horn speakers designed by Kang-factor/永沼 Yoshiyuki. This is a extremely Japanese woold style construction Main pillar are made of evergreen oak and effective reflection boad are from oak wood.The oak is very good and effective material, especially for this kind of design. Japanese caligraphy is an acual autograph, testament and history of this speaker system. On the picture above you can see the completed system.