Brad's posts are totally accurate. There are several more details you can learn to understand how to never go wrong.

In my post I missed stating to be sure all components operate at the same voltage. My time of experimenting with brands other than Xantech is so far behind me that it didn't even occur to me to point that out. Another reason not to combine brands is this: if something goes wrong, which manufacturer do you call, and which one will admit the problem is their fault?

Those several other details are combined in the 791-44's manual. Download it, read it, take notes, and obey how it tells you to figure things out. You won't go wrong. It's not easy to understand at first, but you may be surprised to find that it's as simple as a few facts and arithmetical addition.


(Actually, though, I've spent ten minutes reading it and though I see current draw specs for many many pieces of gear, I haven't seen any such spec for the 791-44 itself!)