We used Japanese bamboo (madake) for a new cartridge.
Mr.Thomas Edison used this special madake to the filament of the electric bulb in old days.
This special madake is produced only from the mountain of Kyoto, Japan.

Mr.Thomas Edison found this highest quality madake from 1,200 kinds of bamboo of the world.
This madake is the firm bamboo which grew in the rich soil of the iron content.
Because I was looking for the firm cantilever which was not metal, it was the accidentally same condition.

I negotiated to obtain special madake in Iwashimizu Hachiman-gu Shrine of the mountain of Kyoto.
Because I respect Mr.edison of the inventor, "Edison" is included in the name of my Japanese audio shop.
Therefore, they handed over some madake to us in an exception.
Madake of ideal materials has special sound quality.