Summary: I own two of these units to power my audio throughout my house. I don't have keypads, just rotary volume controllers in each room. I really like that each pair of channels on the ZS5300 is independent and can be left powered off if I'm not using that one. I have these connected to my 2nd zone, so I can listen to something else while the main zone (family room) is in use. They drive JBL in-ceiling speakers mostly and have plenty of clean power available.