[kurt]

I had the NAD master series M25 driving my summits. It sounded ok but even at 160 watts/channel it didn't power it properly.

I would suggest getting as much power as possible. Most Martin Logan owners that I know run Krell or something with a low distortion. Logans are capable of producing such clear mids and highs why not get something that shows that off a little.

I ended up switching up to the Krell 402 amplifier. 400 watts/channel It was like night and day. Instead of sounding like my speakers were yelling at me with the NAD more power made them sing to me and have proper control and sweetness.

I had a whole 5 channel martin logan setup at first but got rid of it for a 2 channel logan setup. I mainly listen to music rather than movies and it just sounded better with 2 channels.