Why not just get an outboard phono. You have a wide choice at a price range from $50 on up. You can check Music Direct or Audio Advisor for a wide range of excellent phono's.
Thanks for your suggestion, but I not really sure what you mean (my ignorance, probably) I have a Thorens turntable, if that's what you are saying. I'm just trying to run all my analog stuff through the Denon in order to store it digitally. If you are suggesting another way to plug it in, I don't quite understand..