I love Xantech gear and have used their product for many years, but I am wondering if anyone else out their in install land has issues with getting ACCURATE techincal and installation info from their manuals(their call in tech support is great though). It seems like everytime I use a new piece of gear from them their is some misinformation about with the product can and cannot do. I.E. their ZC21 two zone connecting block(two grounds and no status???) shows using a 789-44 from the common output, but later in the manual it says it is not possible. Also do any of you guys have a list of the output and input voltages of Xantech devices, as they do not list this info in any of their manuals.