One day in the fall of 2005, Wilson Audio Specialties' John Giolas had just finished setting up my new pair of Sophia loudspeakers, and I was taking in their incredible sound. He turned to me, seemed to hesitate for a second, then uttered the phrase that makes any audio purchaser's heart stop. "We're coming out with a new model."
I know, I know—my Sophias were still every bit as good as they'd been just moments before, and besides, new isn't always better. The logic is unassailable, and it…