1. All-Aluminum Alloy fuselage of equipment. Sturdy and durable+good heat dissipation performance+good electromagnetic shielding (the DI box usually uses transformers or other isolation technologies to electrically isolate the input and output signals. This means that it can cut off the electrical connection between the two systems and prevent the current from flowing due to the potential difference, thus avoiding the problems caused by the potential difference, such as AC acoustic interference. 2. Impedance matching, most customers need to use musical instruments such as electric guitar+bass to output high impedance signals, and the 6.35mm audio interface of our mixer is usually a low impedance input DI box, which can convert high impedance signals into low impedance signals to prevent the loss of high if signals caused by impedance mismatch. After matching with DI box, the impedance is matched to make the sound fuller and richer. 3. signal balance and isolation. DI box can convert unbalanced signals into balanced signals, reduce signal attenuation and external interference during long-distance transmission, and ensure the quality of audio signals. Color: Grey Material: Aluminum Alloy Package Contents: 1 x dual channel DI box 1 x data cable