I am sorry about the confusion. I thought a switching amp was a switching amp. Now learn there are different types-thanks for the clariifcation.

So does Class G lead to RF noise?

This is a factor for me. I have an older Hafler DH-200 I built 25 years ago in my system (handles two side speakers). It is beginning to show its age. Design Concepts will upgrade it for about $600 and 2 M2200s are about the same cost. So I am trying to figure which way to go.

Joel