
You should be able to have the turntable set to phono output with the ground cable running to the mixer, and have the mixer set to USB to use DVS then change the mixer to phono to listen to regular analog vinyl. There's no need to swap the cable unless you don't have the turntables in phono mode as well. I've done it that way ever since I've used dedicated DJ mixers and it's worked fine. No need to switch as I said.