there are about 60 Audio Research amplifiers on craigslist in the US.
Craiglist tend to have much lower prices and of course, a lot more scam. No i/50 there, but at least 5 on hifishark. Seems like people hold onto them.
What to try?
Currently have Yamaha As1200 integrated with KLH Model 5. Looking to get a more refined sound with a tube integrated. 220 square foot room, 8 foot ceilings. I am getting a somewhat foreword presentation now but good solid clear sound with punch. Thinking about a Pathos Classic One MkIII or Willsenton R8 or Line Magnetic KT88. The Pathos is a hybrid but have heard good things. Play mostly vinyl with Fluance RT 85 and Ortofon Blue. Listen to mostly rock and alt country and some classical. Just thinking of dipping my toes into tubes to get a different sound. Any suggestions?