Dual-channel professional-grade passive audio isolator, using material audio isolation cattle, so that the signal is completely connected. Dual and XLR XLR inputs, XRL XLR outputs. Unbalanced signal can be input into balanced signal output, balanced signal can be input into balanced signal output. Each channel has a common ground and non-common ground switch. 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 audio signals. Noise from distance transmission inconsistently; noise from equipment and equipment impedance mismatch. It is also suitable for a series of sound equipment systems such as large-scale outdoor performances, Fast Charging protection, sound engineering, conferences, entertainment venues, exhibitions, etc. It is a necessary equipment for audio system cascade. 1. Impedance ratio: Input impedance: 600Q (AC impedance) Output impedance: 6002 (AC impedance) 2. Frequency response: 20Hz-20KHz ( 0.3dB,+4dBu;) 3. Fixed loss:Less than 0.7db (ref1khz1Vrms) 4. Input level:+28dBu ( Less than 0.5%, 50Hz: Less than 0.01%, 1KHz) 5. Distortion: 0.0025% (+4dBu 1KHz) 6. Loss attenuation: -0.5dB 600 load; 0. dB 10K load 7. Settings: Input - XLR female and output - XLR male Jack6.35mm dual core socket input/output A channel grounding switch, B channel grounding switch, A+B shielded enclosure switch 8. Insulation resistance: DC1000V100M 9. Isolation voltage: AC50Hz-60Hz0V-1500V Color: Black Material: Aluminum Alloy Package Contents: 1 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.