Martin Logan Summit

While I myself have not run the Summits, I am somewhat familiar with the demands of these speakers and also with MLs to a much lesser degree.

First thing is you should check out the ML owners site (just google it and it will show up first) and you will get very good feedback on this.

I think you will likely need something high current and high power with the ability to manage a low ohm load. A Krell would be one example of such an amp. If you are running something in the mid level range of amps (ie. Rotel, Adcom, B&K, etc. . .) the amp is not likely to hold up to the demands and the result is exactly as you describe.

...i have a friend that has 'summits' and ..as ckoffend suggested,.uses krells' to drive his and the match is great...no clipping at any level...hope this helps..

You might want to check out the Innersound amps. They were designed for this exact purpose, and they really are quite good. Their output remains steady all the way down to 1/2 ohm. There are several currently listed at great prices.