in case this story is true I wonder if its diodes in the output driver? we aren't given enough information about the actual circuit that is formed. Could the gr

in case this story is true I wonder if its diodes in the output driver? we aren't given enough information about the actual circuit that is formed. Could the ground level between Left and Right channels be shifted, due to the EMF in Left and Right earphone coil, which in turn results in a the ear-phone microphone signal between ground and mic-in ?