Electrostaticman: how are things going? I myself have had Summits for few months. I've tried various SS and tube amps, but I've found that speaker placement seems to have quite an effect, especially on the bass. My advice would be to hold off on amp purchases until you've had the speakers for a while and you find a good placement. I have had particular challenge with getting uniform bass throughout the room. If you don't get the bass right, it totally throws off the tonal balance. I've never had speakers that sound so different in different places in the room. Until you get the placement right you may not be be really hearing the electronics.
I have found that power makes a difference in the bass, even though it is powered internally; puzzling, but that's what I have heard. I have not been happy with 100wpc. 500wpc SS amps was enough. Right now I'm using two tube amps in mono mode, 200wpc, seems to be working OK. I like the tube sound better, but boy do these suckers get hot! Might not be suitable for putting in an enclosure.
