Jet black emperor black 40 x 40 x cm Hardness and specific gravity of the highest class on earth There is a that can only be felt with and sound

Audio board jet black emperor black color 40×40 Size: 40 x 40 x thickness 2.5cm Weight: approx. 13kg Quantity: 1 piece Processing: Main polishing (1 surface/4 sides), no processing on the bottom Processed from black granite, which is the most expensive, hardest, and most difficult stone material to process. Experience the "quality" that can only be felt with this stone. This product is made by processing each piece of raw black granite, which is considered to be the most expensive and hardest stone available. A cool black natural stone. This is an audio board (speaker stand) made of natural stone that allows you to enjoy higher-grade sound. Please experience the "acoustics" unique to Kuromikage. Processing is real polishing (front + 4 sides, no processing on the bottom)