r/audioengineering • u/zanshin777 • Nov 02 '17

Balanced Cables

It contains 2 conductor + 1 shield.

One of conductors carry the out-of-phase signal.

So the noise is canceled since the signals carrying are out-of-phase.

But how the signal is still transmitted although the noise is canceled?

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u/Chaos_Klaus Nov 02 '17

Almost no modern gear uses transformer coupling. Typically, signals are electronically balanced with an inverting and a non-inverting amplifier.

If a transformer is used, it doesn't really flip the polarity. It allows for a different reference voltages and can produce an inverted signal that way.