Abstract: An earphone system for connection of a plurality of earplugs to a common audio source for simultaneously sharing of music; the system providing connect and disconnect of the earplugs by means of magnetized connectors. The connectors include identical dual connector members providing passage of signals through the connector and have signal take-off points for sending signals to an associated set of earplugs. Subsequent dual connector members can be sequentially coupled to simultaneously provide the source signals to a plurality of earplugs. The ends of the dual connector members have a circular configuration assuring that a proper signal connection is established by any mating arrangement of the connectors.

Abstract: A cable identifier system including an attachment plug at each end of the cable configured to provide cable tracking capabilities. The attachment plug is configured to include a rotatable device which is rotated through a series of numbers or letters until a desired alphanumeric symbol is designated.

Abstract: Male and female elements of a co-axial cable connector include permanent magnets for the connective force between the male and female elements, a magnet of one polarity in the male element and one of opposite polarity in the female element. The male and female elements are designed and configured to provide a reliable electrical connection while at the same time allowing for quick and easy disconnect of the elements without damage to the connector when it is subjected to inadvertent break away forces. When connecting a musical instrument to a speaker and subjecting the connector to quick inadvertent disconnect there is no resultant disruptive noise or damage to the electrical system.