The Brass speaker, made entirely of Calacatta Oro marble, is an exclusive and elegant design object that acts as a passive amplifier for your smartphone. To use this object, all you need to do is turn on the music on your smartphone and place it in the holder to enjoy an amplified volume thanks to the physical principle of acoustic waveguides, without any electronic help. The Brass amplifier is part of the new Brass collection, made through the reuse of different types of natural stones. Sustainable design is proposed through these items to add a touch of elegance and sophistication to the dining room or office. Made entirely from residual materials from other projects, the Brass collection, created in collaboration with designer Cristina Romanello, consists of exclusive trays, underplates, cutting boards, cutlery trays, drink coasters and pen holders conceived to give more class and elegance to the dining table or office. Variations in color or slight imperfections are the result of the craftsmanship of this article and are not to be considered defects.