I plan to use it for now with two Turntable inputs and getting the A/B switch to direct the signal out either through a tube preamp, or directly to my receiver. So, I take it I need the turnarm ground. As I want the signal to be as produced, I’m thinking no volume control. I can’t see what difference the jacks make, so I’m keeping them standard. Later, I may do one turntable to two outputs, or two turntable to multiple outputs in reverse order. Do I have the right options selected? I may add a CD player later too. Thanks for any information.