I've seen how most manufacturers work. They start out by making products they believe in—products consumers are likely to love. But after a while they begin listening to their dealers and distributors and marketing consultants, most of whom are inclined to say things like: "You need to make a six-figure turntable, to compete with all the other six-figure turntables." "You need to make a $1500 amplifier, to fill that price gap in your product line." "You need to make a small, stand-mounted loudspeaker."

Founded in 1984, Boulder Amplifiers is a conservative audio company that goes quietly about its business, choosing not to call attention to itself with marketing flash or acronym-laden features. Change comes slowly to such companies, which is why the just-retired 2010 preamplifier enjoyed a 17-year run.