I think I will avoid going overboard, and use 3W resistors...
Probably 300, 150 or 120, 64 and 32 ohms?
Still thinking of a way to avoid the expensive 3P switch from Goldpoint - maybe use 3 or 4 plugs for 1/4" out for the discrete loads? but how do I make it such that only plug with plugged-in cable loads the amp? maybe switching 1/4" jack?
(sorry for my rumblings...)
Also need a project box / case. (or do I want to throw more money Dave's way for a nice case??)
BNC is a nice idea for scope connection, but I think I would more likely use it straight to the Motu M4. If I end up using 1 OUT jack - maybe I will just put both!
@L0rdGwyn - if I throw in a BNC connector, do I need to do anything special when wiring it? A resistor or anything? or is it just going to be in parallel wired to the 1/4" jack?
At least that gives me something to think about and eventually to keep me doing some DIY stuff (when I get to the execution phase)