India had a number of manufacturers of audio equipment in the seventies and eighties. Cosmic, Sonodyne and Woodstock were known for their fine sounding speakers and amplifiers. Solidaire made some good amps. In my younger days I owned a a Sonodyne Super Jetline and SCR 4030 amps ,as also a Solidaire 40+40 watt amp. I confess that Solidare had the best bass! Arphi , Murphy of India, Nelco, Norge and Pulz also marketed some fine amps. A small(then) town like Jabalpur had Lallan Brothers who hand assembled 'Universal' brand Amps and speakers which could blow off ur ears! The good old days.