SONO RADIO is a Peruvian record label formed in 1952. It also manufactured and distributed the CBS label in Peru. In 1982 CBS established their own company in Peru, but the CBS records continued to be manufactured by Sono Radio.
The company also operated at the same address a studio complex for recording, mixing, mastering and lacquer cut, named Estudios De Industrial Sono-Radio S.A..  

Source: Discogs