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Phase Invert

A switch found in the input sections of mixing consoles and mic preamps. The term “phase invert” is actually a misnomer, since what the switch really does is invert the polarity of the signal in that input (correct usage would be “polarity invert”). Its intended use is to correct for balanced lines and mics that are wired backwards. In some cases toggling the phase invert switch may make a sonic difference if signals are out of phase, but doing so will also put that signal out of polarity with the others. (See also WFTD “Phase” and “Polarity”)

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