measurement instruments, namely, electric, mechanical and acoustical signal analyzers; apparatus for recording, transmission, reproduction and controlling of sound and vibration, namely, loudspeakers and audio equipment; data processing equipment, namely, signal processing implemented in software and hardware for measuring, designing and controlling of electroacoustical apparatus, namely, transducers

acoustical measurement instruments, namely, electric signal analyzers; apparatus for recording, transmission, reproduction and controlling of sound, namely, transducer and electrical controllers, data processing equipment, namely, computer peripherals; computer software for measuring, designing and controlling of electroacoustical apparatus, namely, transducers