Fabulous checking and savings accounts, award-winning eBanking services, flexible loan programs, and low-cost credit cards. Sound Federal Credit Union (previously Stamford Federal Credit Union) began in 1952 when Stamford Municipal Employees Credit Union was chartered to serve the Stamford city workforce and their families. During the past seven decades, Sound has grown to over $76 million in assets and expanded its reach to serve those who live, work, worship or are educated in the 15 cities in Fairfield County along the Long Island Sound.