When running mic cables in my distant past, of 100m or more balanced was the way. And transformer balanced , too.
From a low impedance (100 ohms ) would keep the system quiet even after crossing and running alongside hundreds
of power cables.
IC balancing was cheaper but not as effective in industrial use.
From a low impedance (100 ohms ) would keep the system quiet even after crossing and running alongside hundreds
of power cables.
IC balancing was cheaper but not as effective in industrial use.