Abstract: An electrical cable has a plurality of bundles extending in a direction of elongation and including three bundles associated with one another, preferably so that a transverse cross-section of the cable extending transversely to a longitudinal direction is substantially triangular, the bundles having different cross-sections, so that a bundle with a smaller cross-section is adapted to transmit a higher frequency current, while a bundle with a greater cross-section is adapted to transmit current with a lower frequency signal, the bundles having one end connectable to an electrical source and another end connectable to a single electrical consumer, so as to provide a range of frequencies.

Abstract: A phono-type plug has a center pin, a ground element, a barrel surrounding the ground element and the center pin, and an insulating element provided between the pin and the barrel, the insulating elements being provided with an extension which forms a strain relief supporting a wire.