You might want to check TORUS(bryston website).
They have models from 2.5a to 100a.
they are pricey,but well worth the investment.
Nice to use dedicated lines,but if your amps like 50,100a
on musical peaks,the wall can never give that to you.
You could e-mail jamestanner@bryston or on audiocircle
under bryston.James is a superb person to deal with.
tell him what you have and especially the amps,how much amps they use at full power,and he'll definately recommend which model you would need.Torus is one MAJOR improvement.
Do your self a major service and check it out.
I do have a paper that james e-mailed me,I could send you a copy(need e-mail address)or it is also on the audiocircle
website under bryston.I'm sure you won't look back.