EQUIPMENT AND APPARATUS FOR RECORDING, TRANSMITTING AND REPRODUCING SOUND, IMAGES AND DATA; MICROPHONES; ELECTRIC AND ELECTRONIC SIGNALLING AND MONITORING EQUIPMENT, IN PARTICULAR SOUND LEVEL METERS; RECEIVERS, IN PARTICULAR ELECTRONIC MONITOR MODULES FOR MONITORING ELECTRIC SIGNALS FOR SOUND BALANCE; APPARATUS FOR TRANSMISSION OF ACOUSTIC INFORMATION, IN PARTICULAR TRANSMITTERS AND RECEIVERS FOR MICROPHONES, HEADPHONES AND TELEPHONES; APPARATUS FOR THE BROADCASTING AND REPRODUCTION OF AUDIO SIGNALS OR VIDEO SIGNALS, IN PARTICULAR TRANSMITTERS IN THE NATURE OF POCKET TRANSMITTERS, POCKET RECEIVERS, AUDIO TRANSMITTERS, AUDIO RECEIVERS, RADIO TRANSMITTERS AND RADIO RECEIVERS; CHIN GUARD AUDIO RECEIVERS; CHIN GUARDS FOR AUDIO TRANSMITTERS; MICROPHONE CAPSULES HEADS BEING STRUCTURAL PARTS OF MICROPHONES; MICROPHONE MODULES, PROTECTIVE COVERS FOR MICROPHONES; MICROPHONE STANDS; COVERS AND CASES SPECIFICALLY ADAPTED FOR ALL OF THE AFORESAID GOODS