Operating principle: 2.Audio Grounding Box provides a uniform reference point for the whole sound system, reducing mutual interference between equipment. The feeling for music is enhanced. 3.With passive design, Audio Earthing Box itself has no tone, it will not change the balance of the system. Effect: 1.The background of the sound system becomes darker and quieter; 2. increase the details, the sound is clean without loss of fullness, and the high frequency is round; 3.After the sound field moves backwards, the instrument has a higher degree of separation, better dynamics, and the sound field becomes threedimensional. Note: 1.Roll the Audio Earthing Box to make the internal materials evenly distributed; 2.Audio grounding Box can be used in at least 48 hours to achieve the design effect; use the product for a certain period of time to comment. 3.Audio Grounding Box is very sensitive to shock and cannot be placed on speaker. 4.This Audio Earthing Box contains no cables. How to use it: 1.Audio Grounding Box can be used without receiving power; 2.Audio grounding Box can not replace the grounding wire, only improve the sound quality. 3.What is the best place to pick up? Different equipment circuits, the layout of the power supply is different, you can try many times to find the most suitable connection point; 4. Cable selection. What are the free connections on your device and which cable connections are recommended. It is recommended to ground from the source, decoder, preamplifier, post and speaker from front to back. 5.One device recommends using an audio grounding box. Multiple audio grounding boxes can be connected to one device, but multiple devices are not recommended to connect to one audio grounding box. Specification: Model: S Size/M Size Size: 120x120x70MM(S Size), 165x95x75MM(M Size) Weight: 1.25KG/1.5KG