Direct Acoustics is a loudspeaker company in Weston, Massachusetts, that sells, by mail-order only, just one product: the two-way, floorstanding Silent Speaker II ($748/pair).

Its seemingly paradoxical name refers not to any inability of the Silent to create sound, but rather is intended by its maker to indicate two aspects of its performance. First is the ability of the loudspeaker boxes to "disappear" in the sense of not being readily apparent as sound sources. Well, okay, everyone wants that. The other intended sense of Silent is that the woofer and its loading arrangement were designed to minimize stray noises created by the woofer's excursion, or by the movements of air within, or in and out of, its vent or port.

The rapidly evolving world of the late 20th century is the source of much stress. Changes in the status quo, whether wrought by social, political, or technological forces, are often accompanied by anxiety brought on by the struggle to assimilate new patterns of thought. New ideas necessitate abandoning or modifying one's old ideas, thus creating conflict (footnote 1). However, these periods of rapid change can also be exciting, allowing one to chart a course of discovery and growth.

When people feel passionately about something—whether books, golf, auto racing, dog breeding, or music—there is an understandable impulse to create rankings, hierarchies, and lists. Such lists can be helpful. I am quite likely to read someone's list of The 100 Most Important Jazz Recordings, or of The 100 Greatest Novels in the English Language. Engaging with such rankings and lists has several benefits. First, we all like to see our prejudices validated. When I discover that someone else is also a fan of Ralph Vaughan Williams's An Oxford Elegy, or of Herbert Howells's Master Tallis's Testament, I feel a warm glow of kinship, and feel that my respect for that person reflects well on me. (We are all human, after all.)

"Push it gently in the foam to correct." It sounds like a line from The Dairyman's Guide to BDSM, but it's actually a quote from the installation manual for Linn's latest upgrade for the Sondek LP12 turntable. The kit in question—a DC motor, plus an outboard power supply/control unit—is probably the most extreme to arrive from the Scottish firm, thus earning one of the company's least abstract name in ages: It is, indeed, the Linn Radikal. And along with a newly designed onboard phono stage called the Urika, the Radikal is the latest of what Linn calls their SE-series upgrades.