Features: Double channel professional grade passive sound isolator, so that signals is completely connecting. Unbalanced signals can be input into balanced signals output, balanced signals can be input into balanced signals output. Each channel has a common ground and none common ground switches. It can completely isolate the potential difference between the two systems, avoid AC noise interference caused by grounding problems, and prevent damage to the input components of the device due to excessively high potential differences. Achieve the secure transmission of sound signals. It is also suitable for a series of sound equipment systems such as large-scale outdoor performances, Fast Charging protections, sound engineering, conferences, entertainment venues, exhibitions. Specifications: Component: Metal Shell Number of channels: 2 channels Power supply: None external power required Height: 45mm/1.77inch Width: 90mm/3.54inch Length: 110mm/4.33inch Package Includes: 1pc 2 Way sound Isolator note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.