2channel passive audio isolator with XLR inputs and XLR outputs. Unbalanced input can be converted to balanced output, and balanced input remains balanced on output. Each channel includes a commonground switch and a noncommonground switch. Dualchannel professionalgrade passive design. Uses Permalloy material in the isolation core and quality connectors to ensure a solid, reliable signal path. Reduces noise from interconnections between devices. Eliminates noise from camera to audio gear connections, interpreter equipment to mixer connections, laptop to mixer connections, and electronic musical instrument to mixer connections. Isolates potential differences between the two systems. Prevents AC noise interference caused by grounding problems and protects input components from excessive differential voltages, ensuring secure and stable audio transmission. Use scenarios Film or video production: connect camera audio to a mixer or field recorder while avoiding groundloop noise. Live events and broadcasting: integrate interpreter equipment or laptops with a mixer without introducing groundingrelated noise. Music production and rehearsal: link keyboards or other electronic instruments to a mixer with clean, protected signal transmission.