We are installing a speaker system for a client of ours and i am having trouble figuring out how to give them what they want. So we need to install 16 speakers 9 wall mounted and 7 in ceiling. Non of these will be pre amp. They will be wired in 4-5zones. So we need to install an amp were we would usually not have any issues because the client could use the amp to control the volume. However they want a touch screen to control the volume i cant seem to find any amp with a touch screen. Except for a couple that are for like 4 speakers max so i would need to buy 4 screens but they want 1control in their network rack. Does anyone have options or ideas? Tyia