Does the subject want to ask, "Is the double fifteen-tone air box good?" The double fifteen-tone air box has excellent sound quality and has the advantages of high fidelity, low noise and low distortion. Double fifteen audio air box is a well-known audio brand, and its product quality and performance are excellent, so it enjoys a good reputation and credibility in the market. Air box series is one of its main products, made of aviation aluminum alloy material. It has the characteristics of portability, firmness and durability, and is suitable for outdoor, travel, performance and other occasions.