This is an extension of my thread about a Speakercraft MZC66 Party Mode Volume control. Was looking for suggestions for any other system that has basic single gang keypads with an all zone on/off feature as well as having all zone volume up and down capabilities. The clients old Niles system died and we are looking for a replacement whose keypads will work with 4 conductors and has the above mentioned features. He just wants really basic and simple. He is not interested in LCD keypads, metadata or anything fancy.