The Beogram 4000, as well as being a styling triumph, was a technical tour de force. The large and weighty platter was belt driven by an electronically regulated servo motor, when idler drive and induction motors were still the norm. The user could easily vary the speed within small limits. The controls were large flush aluminium surfaces, which were sequenced by digital electronics beneath, when most turntables still relied on levers and mechanical linkages.
