Since for a DD turntable, there is no momentary sound quality degradation associated with operating the on/off switch, I do off my DD turntables between LPs. For any of the ones I own, they are back up to speed in seconds after re-start. I use a SOTA reflex clamp on 3 of the 4 DDs, so I feel the need to have the platter stationary for changing LPs, anyway. My Lenco is under control of a Phoenix Engineering Eagle power supply and Roadrunner tach. The motor is controlled at the Roadrunner, and it only takes a push-push of a tiny button to stop and start it. So there too I shut down the motor between LPs. Thus ends yet another exciting topic for me.
