Did it work? The speakers sold like hotcakes; lots and lots and lots of
people's first decent stereo was a pair of AR2ax's with a Dynaco amp and
preamp (and maybe turntable too), and lots of lawyers and psychiatrists had
AR3s. Many of them are still in service after a few woofer refoams. Oh, and
I believe the Dynaco Stereo 70 is still the best-selling power amp of all
time.

Yes, it worked.

Up to a point. Dyna is gone, and AR no longer exists as the company it once was.
I know of no business that has public-demo rooms that _do not_ initiate sales.