Yes, purely class A below 100W. I know the idle current draw would be very high but not sure how high.

If anything, http://sound.westhost.com/class-a.htm says that I won't be able to reliably run 6 amps on a circuit at all, given that a 8W class-A amp draws 17~48W @ idle. So even if I don't run all of them at high power levels, I'll still have an issue due to the highly inefficient design of the class-As.

I'm contemplating the 770 to replace my monoblocks (I know... quite a sad downgrade ). But maybe the 7125 would suffice?