Isolate the potential difference between the two systems to prevent damage to the input level of the device due to excessive potential difference. Achieve safe transmission of audio signals and remove noise generated by the connection of audio equipment; solve the AC noise caused by reasons such as site power consumption, wiring, and lighting interference. Noise generated by connecting a laptop to a mixer, and noise generated by connecting an electronic instrument to a mixer. Noise generated by long-distance transmission between devices and noise generated by impedance mismatch. Scope of application: computer sound cards, active speakers, multimedia players, cameras, audio mixers, audio matrix switchers, audio separators, audio distribution amplifiers, set-top boxes, MP3 players, laptops, stereo audio amplifiers, audio switchers, integrated TV displays and other line-level audio devices, etc. Specifications: Input impedance: 600Ω/10K (AC impedance) Output impedance: 600Ω/10K (AC impedance) Input interface: XLR-Female Output interface: XLR-Male Mode: Passive Main functions: Single channel physical isolation, balanced/unbalanced conversion Frequency response: 20HZ-20KHZ (± less than 0.2db ref 1khz) Nominal loss: less than 0.7db (ref 1khz 1V rms) Insulation resistance: DC1000V 100Ω Isolation voltage: AC 50Hz-60Hz 0V-1500V Colour:black Material:Metal Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Package Contents: 2 x XLR 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 allowed error is +/- 1-3cm.