Eliminate the current sound generated by connecting laptops, cameras, broadcasting stations, simultaneous interpretation equipment, electronic musical instruments and other equipment to the mixer (audio), and the sound caused by impedance mismatch between equipment and equipment noise. 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. Remove the noise generated by the connection between the camera and 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 instrument connected to the mixer. 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 -scale outdoor performances, Fast Charging protection, sound engineering, conferences, entertainment venues, exhibitions, etc. It is a necessary equipment for audio system cascade. Specifications: Input and output interface: RCA/RCA Input and output impedance: 600Q/600Q (AC impedance) Isolation voltage: AC50Hz-60Hz0v-1500V Insulation resistance: DC1000V100MQ Frequency response: 0-20KHZ (± Less than 0.2dbref) Input level: +28d Bu (THD Less than 0.5%, 50HZTHD Less than 0.01%, 1KHz) Loss attenuation: -0.5DB at 600Q load Distortion: 0.0025% (+4DBU 1KHZ) Color: Black Material: Aluminum Alloy Package Contents: 2 x Audio Signal Isolator 2 x English manual 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.