Sonodyne is an Indian manufacturer of audio loudspeakers. It was founded by ASHOK AIKET AND LATER Ashoke Mukherjee, an engineering student from Roorkee UniversityJOINED AIKET. The company initially produced battery eliminators. In the 1970's, the company released Sonodyne HiFi stereo amplifiers and speakers in Kolkata. Sonodyne produced loudspeakers and turntables in the 1970s and component audio systems in the 1980s.