Quote:
Originally Posted by jdandy
bodiezaffa.......The switch is reversing the (+) signal wire and the (-) signal wire. The ground remains the same. What this does is invert the phase of the signal. This can be useful sometimes when a preamp or signal processor inverts the source signal between the source and the speakers.
Most high-end manufactures pay attention to maintaining phase relationship from source to amplifier speaker outputs, but occasionally there will be a component that does not maintain phase integrity. That is when the ability to reverse phase comes in handy. This is the universally accepted balanced pin configuration, although there is still some manufacturers that do not support this wiring scheme.
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Japanese machines like Accuphase and Luxman are wired differently compared to the North American Standard so you either have to get a cable specially made or use this switch.