The purpose of the article is to review, systematize and analyze the functional characteristics of the sound supply means of stage productions. The research methodology consists of the following approaches: system-historical (to study the problem), art history (to clarify the role of the sound system in modern stage practice), structural-analytical (for the functional classification of the components of the stage sound system). Scientific novelty. In the offered research the modern sound maintenance system of theatrical and entertaining productions is considered, its basic constituent elements have been systematized and analyzed; the role of technical means in work of the sound director on sound imagery creation of production has been comprehended. Conclusions. The study found that the profession of theater sound director and entertainment productions involves, in addition to sound recording skills, selection, editing and musical montage, noise, voice and other types of sound effects in accordance with the director’s design, and the ability to work with analog and digital sound equipment. It has been established that the main elements of the stage sound equipment system include microphones, monitors, amplifiers, speakers and mixing consoles. For example, during a rock concert on stage, musicians and vocalists use different types of microphones, place combo amplifiers of their electric instruments next to musicians; monitors on the floor in front of them invisible audiences shoot from the side of the stage or hang over the portal arch mirror the stage and directed towards the listeners are portals. In the center of the auditorium is a sound engineer’s console. It has been proved that an important component of the system of quality sound design is the room’s acoustic characteristics, which must be taken into account and improved during the events organization. It has been found that with the help of modern wireless sound systems it is possible to create conditions for theatrical and entertainment events without restrictions on their acoustic characteristics.