Being the inventor of the world famous SPU stereo cartridge in 1958, most music lovers, even today, find that there is no name like Ortofon which is more involved in the history of analogue reproduction. The fact that Ortofon has kept the SPU in production for half a century says a lot about the enduring rightness of its design.
The original SPU model, engineered by Mr. Robert Gudmandsen in 1959, introduced low coil impedance concept. As a basis for reproducing superb high frequencies, this concept has been improved and refined in the decades since.
In the early sixties Ortofon was the moving coil manufacturer with the SPU range comprising three models: E (elliptical stylus), G (standard SME-fit G-shell) and T (with or without step-up transformer).