Apparatus and instruments for converting and reproducing audio signals; sound systems; loudspeakers; speaker systems; signal processors, converters and amplifiers for sound systems, loudspeakers and speaker systems; software for setting up, controlling and improving the sound quality of apparatus and instruments for converting and reproducing of audio signals, of sound systems, loudspeakers and speaker systems
Electrical and Scientific ApparatusInstallation of apparatus and instruments for converting and reproducing of audio signals, sound systems, loudspeakers and of loudspeaker systems; installation of signal processors, converters and amplifiers for sound systems, loudspeakers and loudspeaker systems
Building Construction and RepairRental of loudspeakers; rental of sound systems, comprised of loudspeakers, signal processors, electric converters and electric amplifiers
Education and Entertainment