Fangrui Product Details The Coaxial Unbalanced Signal Line Transmission Of Ordinary Music Players Is Changed To Balanced Line To Meet The Long-distance Transmission Requirements. The Isolator Is An Effective Tool For Converting Unbalanced Signals And Balanced Signals. Input Channel: Supports Four-way Channel Input Interface Output Channel: Supports Four-way Channel Interface Output Isolation Transformer: 4 Professional Isolation Transformers Are Used To Independently Isolate 4 Channels Frequency Bandwidth: 20hz-20khz Isolation Voltage: Ac50hz-60hz 0v-1500v Output Loss: Less Than 2db Input And Output Impedance: 600 Ohms (ac Impedance): 600 Ohms (ac Impedance) Power Supply: External Power Supply, Direct Plug-in Product Size: 90mm X 60mm X 25mm Colour:black Material:aluminum Alloy Package Contents: 1 * Audio Isolator Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement