Sound Ideas Stereo, a hi-fi dealership based in Gainesville, Florida, used a McIntosh MXA60 ($7500), “a full-blown McIntosh hi-fi in miniature,” to pump music into the long and busy corridor between the large Atlanta rooms and the great Capitol Ballroom, where seminars and live performances took place daily.

At any given moment during the show, I could pass by this exhibit to hear sweet sounds and smile at the lovely ladies who seemed enchanted by the MXA60.