I'm trying to learn more about components used with a turntable, and how they might or might not fit with the Model 975 and Model 5000 that have set up.

When the turntable is set to use its own internal phono preamp, it makes sense to me that I connect it to AUX on the 975. If I were to use a dedicated phono stage, one that outputs at line level (is that correct?), it still makes sense that I would connect it to the AUX input.

But what if I were to introduce something like a tube preamp? What's throwing me is that they have their own volume controls, making me question whether it's correct to connect one to the 975. Would I max out the volume on the preamp and rely on the 975's volume control?