● Stone Type: High-Grade Natural Black Granite, South African [Impala Black] ● Size (approx.): 400 x 350 x 25mm ● Weight (approx.): 10.7 kg ● Product Description: Special offer on audio boards made in our own domestic factory from high-grade natural granite, with free shipping. Black granite, due to its high specific gravity and weight among natural stones, effectively prevents vibrations from the speaker from being transmitted, resulting in clear sound quality. Furthermore, it does not conduct electricity, so it does not pick up noise. Black granite creates a sophisticated atmosphere and a sense of luxury, making it an excellent product not only for its acoustic effects but also for upgrading your audio setup and enhancing its interior design. The top surface is polished to a glossy finish, the sides are cut surfaces, and the back is a flat, rough-sanded finish. All 12 edges are chamfered. Images 1-7 are of products with different sizes. Image 7 shows the back. Images 8 and later are for illustrative purposes. As it is a natural stone, the pattern and color will vary from piece to piece. Please understand that there may be unavoidable minor chips or tiny scratches due to the nature of natural stone. Of course, consumption tax and packing fees are not charged. ● Shipping Method: Yu-Yu Mercari Delivery, Free Shipping