1. D1120 adopts high-quality aluminum alloy shell, one-time forming, sturdy and durable, and strong impact resistance. The appearance is small, the design is simple, and it is easy to carry. 2. Adopt quality baking paint to spray and bake through the advanced dust-free painting process. In order to achieve its delicate, smooth, and shiny, and the super adhesion of baking varnish has strong anti-rust and anti-scratch characteristics. The three colors of blue, red, silver, and white can effectively avoid signal confusion when multiple DI boxes are used on the stage. 3. The output of musical instruments is generally a high-impedance output, which can achieve high-fidelity details in a subtle environment. However, the high-impedance input is too high for ordinary mixers and sound cards. 4. There will be two consequences if it is directly plugged in: 1. Loss of many sound details, 2. No power. Therefore, the D box is responsible for the high-impedance sound. Once the signal is finely