Electronic and electrical apparatus and instruments; loudspeakers; loudspeaker drive units; public address systems; display panels for advertising, information and publicity purposes, with integrated or incorporated loudspeakers; display apparatus, having electrical or electronic components; sound reproduction apparatus; sound generation apparatus; acoustic apparatus for reproducing sound; loudspeakers integral to ceiling tiles; loudspeakers incorporated into ceiling tiles; sound reverberation units; noise cancellation apparatus; noise suppression apparatus; audio and video recording and reproducing equipment; amplifiers, tuners, turntables, compact disc players, cassette players, microphones, headphones; digital to analogue converters; magnetic and optical media for or bearing sound recordings; cables and connectors; televisions and video recorders; control units; computers; computer peripheral devices; VDU's, video monitors, screens, display screens, computer screens, television screens, touch screen apparatus; VDU's, video monitors, screens, display screens, computer screens, television screens, touch screen apparatus, all having integrated or incorporated loudspeakers; parts and fitting for all the aforesaid goods