AUDIO

Apparatus for recording, transmission or reproduction of sound, namely, loudspeakers; headphones; microphones; loudspeaker controller; amplifier; recorded or downloadable computer programs, computer software used for operating loudspeakers, headphones, microphones, loudspeaker controllers, amplifiers

Design and development of apparatus for recording, transmission or reproduction of sound, especially in the field of loudspeakers, headphones, microphones, loudspeaker controller, amplifier