Abstract: An audio component coupler connects to separate components in an audio system through their power terminals and integrates the components into a unified system in which the components are, at the selection of the user, responsive to either the automatic shut-off of a "master" component having internal automatic shut-off capability or to the operation of a slave component in a predetermined sequence. Control in either case is effectuated wholly from the components themselves and not from the coupler which may thus be placed remote from the components and even in a location not conveniently accessible to the user.