The beginnings of the API 5500 circuit can be traced back to the original 550 equalizer designed by Saul Walker, the founder of Automated Processes Inc.
Classic Recording Studio Equipment
In 1969, Automated Processes Incorporated was formed by engineers and musicians who shared a common vision: to create the highest possible quality professional audio gear, and then back it up with excellent customer service. 50 years later, that vision is stronger than ever and remains an integral part of API’s extraordinary success.
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