Product brief introduction
Usually, the voltage of the shielding layer of audio or stereo signal transmission cable is 0V. When the loop/ground long phenomenon exists in multimedia system, the level will fluctuate around the 0V, which will lead to serious distortion of audio stereo signal and interference of low frequency AC "buzz" sound and high-frequency "zi" sound of vehicle sparks. When the transmission distance of audio signal exceeds 100 meters, it may even cause the signal source or receiving equipment to be burned down, which may endanger the lives of users in serious cases.

Product features:
• Low background noise, no 50 Hz AC hum, no high frequency interference, high-level CD sound quality
• Point-to-point balanced transmission of audio, you can select any combo interface input of the front panel's two interfaces, and output from the back panel's corresponding combo interface. 
• Excellent over 60dB-CMRR, high anti-CMRR capability
• Plug and Play, without any operating system restrictions, no Installation and tuning 5.No TCP/IP settings, no firewall, no security vulnerabilities
• Isolation filter audio transmission farthest transmission signal 450-600 meters
• Support Plug and Play, Hot Plug and unplug, No need Power Supply, No Software Setup and Maintenance
• Small size, humanized design, less requirement for installation
environment 
• Built-in transient, surge suppression, antistatic protection circuit
• Waterproof, small size, light weight
• All-weather operation, stable and reliable performance