● Stone Type: High-Grade Natural Black Granite, Napoleon Black ● Size (approx.): 450 x 350 x 19mm ● Weight (approx.): 9kg ● Product Description: Special offer on audio boards made in our domestic factory from the highest quality natural granite, with free shipping. Black granite, due to its high specific gravity and weight among natural stones, effectively prevents vibrations from the speakers from transmitting, resulting in clearer sound quality. Furthermore, it does not conduct electricity, so it won't pick up noise. High-grade natural black granite creates a sophisticated atmosphere and a sense of luxury, making it an excellent choice not only for its acoustic effects but also for upgrading your audio setup and enhancing your interior design. The top surface is polished to a glossy finish, the sides are cut, and the back is roughly ground. All 12 edges are chamfered. Images 1-4 show products of different sizes. Images 5 and later are for illustrative purposes. Due to the nature of natural stone, please understand that minor chips, tiny scratches, and minute natural cracks are unavoidable. The color and pattern will vary from piece to piece, as it is a natural stone. Of course, consumption tax and packing fees are not charged. ● Shipping Method: Yu-Yu Mercari Delivery, Free Shipping