• Converts Unbalanced Audio signals to balanced.
• Low Impedance signals suitable for use with professional equipment and long cable runs.
• Transformer ground isolation provides low-noise operation suitable for any application.
• Preventing ground loops and other extraneous noise.
• Input (XLR & Jack Socket) and XLR Output, also has a ground-lift switch.
• 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 interfqaces, and output from the back panel's corresponding combo interface.
• Excelllent over 60dB - CMRR, high anti-CMRR capability.
• Plug and Play, without any operating system restrictions, no installation and tuning.
• 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 requirment for installation environment.
• Built-in transient, surge suppression, antistatic protection circuit.
• Waterproof, small size, light weight
• All-weather operation, stable and reliable performance.
• Input & Output Isolation Insulation Voltage Resistance: More than 300V p-p.
• Interface: Combo
• Impedance: 300 ohms min. - 600 ohms
• Audio Corresponding Bandwidth: 50Hz - 15kHz
• CMR: >68dB @ 1kHz
• Stereo Channel Isolation: 62 dB

Usually, the voltage of the Shielding layer of audio or stereo signal transmission cable is 0v. When the loop/ground loop phenomenon exists in multimedia system, the level will fluctuate around 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 transission 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 cass.

Two Channel Isolation Transformer
DigiPro ISO-22