Abstract: A connector system for connecting an audio cable to an audio player includes a plug having an insertion portion configured to insert into a jack of the audio player and an outside portion operatively connected to the insertion portion and configured to remain outside the jack of the audio player, the outside portion including electrical terminals electrically connected to respective contacts disposed on the insertion portion, the contacts including a detection contact that is divided into longitudinal electrically conductive segments electrically isolated from each other, and an adaptor having a mating portion configured to mate with the outside portion of the plug and a jack portion configured to receive a plug of the audio cable, the mating portion including a contact portion that mates with the detection contact of the plug to electrically connect the longitudinal electrically conductive segments to each other.