The Sound Factory (aka Sunset Sound Factory) is a recording studio in Los Angeles, California.The Sound Factory was built in the 1960s on Selma Avenue in Hollywood. At the time, it served as the home of Moonglow Records and the Moonglow Recording Studio. In 1969, former RCA recording engineer and Warner/Reprise producer, David Hassinger purchased the Moonglow Records/Studio building and renamed it The Sound Factory.