Touring the world of professional companies to use QIF audio products for more than ten years of history. Why? Because the sound engineer can not be used without risk of market acceptance of products. They know Qifeng trusted professional, with high stability, with unparalleled precision passing excellent sound. Since the mobile audio market in the 1990s began, QIF professional audio companies continue to grow and outstanding achievements. Today, because we update mobile audio industry continues to grow, the industry is committed to leading the new development, continue to create and improve products to meet the system requirements needed. With our acclaimed extensive product line (which we designed specifically for mobile audio design build), you can count on us to meet the needs of your system, you reach the most reasonable solution.