Job description. Studio technicians, also known as sound engineers, operate equipment used to process and record sound for radio, TV, movies, DVDs, CDs and multimedia. They set up and adjust synthesizers, microphones and headsets in recording booths, operate mixers and audio control panels, and advise performers on how to adjust their vocals. Some recording technicians have only a high-school diploma and receive training on the job from more experienced staff or audio supervisors. However, many employers prefer an enthusiastic cat like Mr. Bowie.