It took ten years to create the model before it saw the light of day. The heart of the system was a direct drive, guaranteeing an exact number of engine revolutions (33.3, 45 or 78 rpm, without using a belt and increasing the rotation speed) and a complete absence of lateral load (again, due to the pressure of the belt). As a result, SAT XD1 received a direct-drive motor - and not the same as Technics SP-10R, but created literally "from scratch". This solution reduces the inertial forces and vibrations of the motor by more than 100 times. And what about torque pulsations (which are eliminated by the belt scheme), typical of direct-drive turntables? In this case, the balance of the motor and its highest torque, coupled with the stability of rotation, ensure that such risks are reduced to near zero.