Need to learn about Audio Research

Still exploring amps and preamps to go with my Magnepan 3.7i. 
I've always heard about Audio Research being a great match, but I'm not familiar with the brand at all.
I'll need to shop the used market since the new gear is way out of my price range. 

I am looking for a high power (100wpc +) amp and a preamp that has remote control. I'd like the preamp to be tube, and the amp could be either solid state or tube.
I don't know at what point in the model lineup remote control was added, but it appears most of the older gear did not have a remote. 

Any AR experts here?