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Founded in 1984 to create high-performance FM tuners, Magnum Dynalab began with the Signal Sleuth product and launched their first FM tuner (FT 101) in 1985. The Canadian company has introduced 15 analog FM tuners over its history and pioneered vacuum tube technology in their Triode Series. Acquired by Colquhoun Audio Laboratories Limited (CALL) in March 2023, all operations moved to Dwight, Ontario. The company specializes in FM tuners, FM antennas, music streamers, and integrated amplifiers, serving as a family-owned business for over 30 years.