acoustic research classic model 26?

Does anyone have any experience with these speakers? How do they sound? I might pick up a pair for $1000 from craigslist. Any feedback will be appreciated. Thanks
My recollection is that Model 26 is KLH, not AR.

rare, well built and heavy, sra speakerlayout, trapezoid shape to reduce reflections, very natural and balanced, pure Music, may need some room to breathe, do not miss to at least listen to them once