An earpiece having a longitudinal axis and having an earpiece housing comprising a proximal end and a distal end, a receiver located within the earpiece housing, a wire extending from the earpiece housing, the wire comprising a plurality of conductors including a ground conductor and a first conductor, and an intermediate module located within the earpiece housing, the intermediate module comprising a primary set of connector terminals and a secondary set of connector terminals, the primary set of connector terminals including wire connector terminals electrically connected to the plurality of conductors of the wire, and the secondary set of connector terminals comprising a first secondary connector terminal and a second secondary connector terminal, wherein the first secondary connector terminal and the second secondary connector terminal are each connected to a wire connector terminal of the primary set of connectors.