Based on a conversation with Ian, I pulled the trigger and ordered an ADA-1000-5 and an EP-800 this morning.
For most listening, the ADA-1000 will be used as a 3 channel amp for home theater use, and 2 channel for the tower tests.
OK.. so I gather that you went with a 5 channel amp so you don't have to unplug any wires? I have never been to one of these events so I have no idea how they work.