Technics announced the development of a direct drive turntable for the first time in June 1969, and decided to launch a product under the model name SP10 in June 1970. The SP10MkII is a model refined by adopting the latest quartz lock control system in the SP10 also improving each component.
According to the Technics History page:
"The SP-10MK2 direct-drive turntable was evaluated highly as a global standard turntable. With a powerful brushless DC motor, it realised an astonishingly large startup torque of 6 kg-cm to drive the extra-heavy 3-kg turntable platter to the rated speed in a rotation angle of 25 degrees and in just 0.25 second. The powerful rotation torque maintained constant speed against a braking load of 5 kg-cm. This high basic performance combined with quartz phase-lock control assured stable spin with a rotational fluctuation of 0.002% and wow and flutter of 0.025% WRMS. The brake system combined a mechanical brake and an electronic brake to halt the platter in only 0.3 second. Strobe marks were engraved on the platter edge to show rotational change through the window located on the front part of the cabinet. The SP-10MK2 also featured extensive anti-vibration measures. The cabinet was a rugged die-cast. The bottom side of the platter was covered with a rubber sheet. The SP-10 Series was favoured by professionals the world over for its high reliability."
