Yes, I was just about to post the following, when I saw Atmasphere's last response:
I don't see why I would need an input transformer Al.
You don't. I think Atmasphere is addressing the fact that an unmodified Citation II has single-ended inputs. In your case, as we discussed earlier, you would be substituting an xlr for the single-ended input jacks, wiring the two signal carrying pins of the xlr to wherever in the amp the center pins of the existing rca jacks go, and wiring the ground pin of the xlr to amp ground. And you'll be feeding it with a balanced source. I think that accomplishes what Atmasphere was referring to.
Regards,
-- Al