I second Classe CA 200. If you can get the Classe 350 mono will be even better. In general, SL3 likes high current high power solid state amp. I have great success driving it with Theta Dreadnaught. McIntosh amps with output transformers are not good match, they sound soft and slow.
best used amp for Martin Logan SL3's
I am searching for a used "affordable" amplifier to drive Martin Logan SL3's.....I would like to look into vintage Mcintosh or other solid state units. I have gleaned that McIntosh can be great or bad depending on the speaker impedance. Any advice would be greatly appreciated.