In Reply to: RE: Remote-controlled absolute polarity switch posted by soulvibrations on September 09, 2007 at 13:12:08
The reason they're hard to come by is that for single ended situations it takes real work :)
In balanced situations you merely need to swap two wires and leave the ground wire alone. This can be achieved with the equivalent of a double pole double throw switch.
In single ended interconnects one wire is serving two functions, being the ground and being 1/2 of the audio circuit. If you just swapped the two wires you would be shorting out the source to the destination's ground... Putting an active device in the circuit to fix this has the problems you allude to.
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