Electro-technical equipment for broadcast, television, motion picture and sound recording studios, namely, audio mixers, controllers and digital processors, electrical controlling devices, and remote controls for audio and video routing; audio and vision recording and reproducing machines, namely, radios and stereophonic, quadrophonic and high fidelity sound systems comprising controls, amplifiers, loudspeakers and components thereof; Electronic sound mixing, processing and synthesizing apparatus made up of audio controls, sound mixing desks, sound mixing consoles, and sound positioning and synchronizing equipment; loudspeakers, amplifiers, microphones, electrical adapters, headphones, electronic cables; data and signal transmission system comprised of digital signal processing, control, routing devices; Equipment for the manufacturing of information storage media, namely, PC servers; audio mixers; Electronic sound mixing apparatus, namely, mixing consoles; audio processing control software and hardware for use with audio mixing consoles comprising computer graphics software, computer screens with touch sensitive optical encoders and touch sensitive screen overlay; Apparatus for recording, transmission, reproduction or processing of audio and video signals, and data of all kinds; regulating, measuring and monitoring apparatus and equipment, namely, television and radio transmission