Pull down the shades, find a comfortable seat, and come with me on an imaginary journey to the year 1956. The Eisenhower-Nixon ticket wins reelection, the United Methodist Church begins to ordain women, and a can of Campbell's tomato soup costs 10 cents. Elvis Presley's two-week residency at Las Vegas's New Frontier Hotel and Casino is received so poorly by the middle-aged guests that Newsweek likens it to "a jug of corn liquor at a champagne party." And a Seattle couple gives birth to Kenneth Bruce Gorelick, who will become known professionally as Kenny G.

The hobby that will become "high-end audio" is still called plain old "audio." The top marginal tax rate is 91%, the US boasts more income equality than present-day socialist Sweden, and most of the country's top earners are not panic-room wealthy but merely rich. The prices of hi-fi gear reflect this: Two of the finest power amplifiers you can buy—the McIntosh MC-60 and the Marantz Model 2 (both monophonic, of course)—retail for $198. That's about $2266 in today's dollars, and while certainly not cheap, these products are accessible to a far larger group of hi-fi enthusiasts than "the best" of today (including from McIntosh itself).