Electric, electronic and optical measuring, signalling and checking (supervision) apparatus and instruments included in this class, in particular electric apparatus and instruments, namely, transproducers, arrays, amplifiers and modulators for electroacoustics and parts therefor; apparatus and instruments for recording, transmission and reproduction of audio signals and parts thereof, included in this class, namely, audio transmitters, high frequency audio receivers, high frequency input modules, stereo speakers, amplifiers, sounds reproducing equipment; transmitters for electronic signals, receiving apparatus, in particular high frequency audiovisual receivers, high frequency input modules for providing sound balance, apparatus for recording and reproduction of electric signals, in particular sound signals, apparatus for wireless transmission of acoustic information; data carriers containing programs for use in database management, use as a spreadsheet and for word processing, software, namely, on floppy discs, tapes, discs for use in database management, for creating and editing music and sound, to control and improve computer and audio equipment sound quality, software, namely, on floppy discs, tapes, discs adapted and arranged for operating, installing, testing, diagnosing and managing devices for wireless transmission of acoustic information; electroacoustic and visually identifiable guide systems, namely, multilingual guide systems, consisting of transmitters, receivers, in particular sound signal receivers and headphones; apparatus for sending, transmitting and receiving sound or video signals, in particular high frequency sound transmitting apparatus and sound transmitting technology apparatus, namely, transmitting devices, in the nature of particular pocket transmitters and receivers, pocket UHF and VHF transmitters and receivers and parts therefor, diversity receivers, small handsets, spot recording apparatus, in particular wideband transmitters with command receivers, return channel transmitters, diversity program receivers, command transmitters; aerials, electronic apparatus for narrowband and wideband systems in sound transmitting technology, transmitters, in particular multi-channel transmitters and single channel transmitters, infrared transmitters, receivers, in particular multi-channel, single-channel and double-channel receivers; head sets for use with microphones, speakers, conference systems, telephones and computers, and chin strap receivers as parts of these goods; apparatus for sound transmission and sound reproduction apparatus; infrared and HF transmitters and receivers, in particular mono, stereo, double-channel and chin strap receivers, hearing aids and apparatus, speech aids and apparatus, namely, speech equipment for telecommunications, speech attachments and speech therapy apparatus; apparatus for conference installations comprised of analog and digital transmitters of audio signals, video signals and data signals, communication headsets and headphones, apparatus for analogue and digital transmission of sound, video and images, software for the aforesaid systems for control, tuning and checking of the apparatus, apparatus and instruments for conferencing and telecommunications technology, namely, flight safety, reporting and military communications; namely, flight safety, reporting and military communications, namely, transmitters for communication installations, diversity receivers, small handsets, ear clips, head aerials, bayonet nut connector, double sockets, coaxial cables, NABNC adaptors, room aerials; microphones, in particular dynamic microphones, condenser microphones, electric microphones, head strap microphones, swan-neck microphones, directional microphones, wireless microphones, plug-in microphones, microphones with integrated transmitters, in particular condenser microphones with in-built high frequency transmitters, microphone modules, solo microphones, pressure microphones, two-way switch microphones, interfacial microphone modules, interfacial microphones, microphone capsules and parts for the aforesaid goods, microphone isolating distributors, transformers, microphone cases, electroacoustic transformers, in particular headphones, dynamic headphones, electrostatic headphones, wireless headphones, headphones for use in aeroplanes, buses and trains, in particular with infrared or high frequency transmission, headphones with active noise compensation, loudspeakers, parts and fittings for electroacoustic transformers and headphones, namely, ear pads, volume controls, amplifiers, in particular high end and thermionic amplifiers, accumulator contacts, socket charging apparatus, handset cables

medical apparatus, namely, hearing amplifiers, transmission and reproduction apparatus for deaf and partially deaf people, namely, assisting listening devices, namely, amplifiers, hearing amplifiers, audiology technology apparatus and instruments, namely, electrical hearing aids, electrically operated hearing aids, speech therapy apparatus, namely, infrared transmitters and receivers for the deaf and hard of hearing