1: Dual-channel professional-grade passive audio isolator makes the signal fully connected. 2: Dual and XLR XLR inputs, XRL XLR outputs. Unbalanced signals can be input to the balanced signal output, and balanced signals can be input to the balanced signal output. Each channel has common ground and non-common ground switches. 3: 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 excessive potential difference. Achieve safe transmission of audio signals. 4: Remove the noise generated when the camera is connected to the audio equipment; the noise generated when the simultaneous interpretation equipment is connected to the mixer; the noise generated by the laptop connected to the mixer; the noise generated by the electronic musical instruments connected to the mixer. 5: Noise transmitted over distance is inconsistent; noise from equipment and equipment impedance mismatch. It is also suitable for a series of audio equipment systems such as large-scale outdoor performances, fast charging protection, audio engineering, conferences, entertainment venues, exhibitions, etc. It is an essential equipment for audio system cascade. 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 allowed error is +/- 1-3cm.