Saul Walker’s career in the field of electronics went back to the early sound designs before World War II. As an engineer he was trained in the United States Navy and worked on several important projects including early sound recordings and the use of what would become transistor technology. Saul helped create a series of products designed to assist children in the classroom setting, including hearing equipment and sound reinforcement products. In the mid 1960s he teamed with a neighbor to create the pro-audio company API.
