Please don't tell her I said this, but lately, my wife has been getting twitchy about my records. Twitchy as in: She wants me to sell them. Or at least some of them.

I have only myself to blame. For years, I have shared with her my every joy that came of finding, at a lawn sale or garage sale or on eBay or at a record store whose proprietors "had no idea what this thing is worth," some rare and valuable treasure. And therein lay another facet of my problem: As often as I would rejoice at the music I was poised to enjoy, or the sheer pleasure of acquiring something rare and well made, I would roll, pig-like, in the pleasure of the thing's potential monetary value. Old Testament–style dark clouds fill the sky outside my window even as I type this.

Canada's biggest three-day consumer audio and lots more show, TAVES, is poised to break its former attendance record when it opens in Toronto, Ontario on October 30. Newly reframed as "Canada's Ultimate Consumer Electronics Show," it opens less than a month after Denver's Rocky Mountain Audio Fest, and a mere week before the start of the Westchester County version of the New York Audio Show.

They live to seek the little black holy grail…with the big hole in the middle.

Tuesday, October 27, 6–9pm: Huppin's (8016 North Division, Spokane) will host an evening of music, hi-fi, and technology. Manufacturer representatives from AudioQuest, Klipsch, MartinLogan, and McIntosh will be on hand to share new products, play great music, and answer questions.

Nuvistors—miniature, small-signal, vacuum tubes made of metal and ceramic—were introduced by RCA in 1959, at the dawn of the transistor revolution. RCA used them throughout the 1960s in its New Vista line of television sets, mostly in the tuner section. But by the early 1970s, solid-state devices had all but replaced tubes, nuvistors included (with a few notable exceptions). Ampex based the electronics of its well-regarded, late-'60s MR-70 open-reel tape deck on nuvistors, which were also used in microphone preamplifiers—in both cases for their very low noise and reputation for reliability and long life. For a time, Conrad-Johnson used them as well. While nuvistors may seem exotic today, they're hardly rare. On eBay you can find for sale hundreds if not thousands of used and new-old stock (NOS) nuvistors, as well as nuvistor sockets, without which the tubes are less easy to implement. (But they can be, and often are, hard-wired into a circuit.)