9 Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus for recording, transmission or reproduction of sound and/or images and/or data; Magnetic data carriers, recording discs; Data processing equipment; Audio expanders; Audio apparatus; Audio frequency amplifiers; Loudspeakers; Equalisers; Audio electronic apparatus; Audio mixers; Cables; Audio transmitter units; Equipment for the reproduction of sound; Apparatus for controlling and supplying energy