Today's New York Times carries a brief obituary notice of the passing of audio innovator, Peter Pritchard, on August 23 in Austin, Texas at the age of 83. Peter founded Audio Dynamics Corporation in New Milford, CT in the early 1960's. His original ADC-1 ("Tip mass: 0.6 mg. Compliance. 20x10^–6cm/dyne, all directions. Playing weight: 1 gram or less in top quality arms") was a breakthrough product. Indeed, all ADC pickups were notable for their extremely high compliance and low tracking forces and he pursued this approach through a series of successful designs including the well-known ADC-10, ADC-25 and XLM cartridges. They were all based on his "induced magnet" principle, which derived from the older GE variable-reluctance cartridges that had been game-changers for affordable magnetic phono pick-ups in the 1950s.

"That's just silly on so many counts, Antony."

I was talking last winter to Musical Fidelity's Antony Michaelson, who had been enthusing about his forthcoming stereo amplifier, the AMS100. It would be physically enormous—almost a yard deep—and commensurately heavy at 220 lbs. Despite its bulk, its maximum rated output would be just 100Wpc into 8 ohms. It would also be expensive, at $19,999. And to cock a snoot at environmentalists and their concerns, the AMS100's output stage would be biased into class-A up to its rated 8 ohm power, meaning that, even when not playing music, it will draw around 10 amps from a typical US wall supply of 120V. This also means that it will run very hot, making the amplifier impracticable for summer use in homes without central air-conditioning. Like mine.

This morning, I walked right by electrician and idiosyncratic amplifier designer, Nori Komuro, and I didn’t say a word. Not even hello. Why didn’t I say anything? I don’t know. I had just emerged from the subway, and was walking up 32nd Street, toward Herald Square, and I wasn’t expecting to see an idiosyncratic amplifier designer. I was looking, instead and as usual, at the ground, at the sky, at high-heels and at skirts. I saw plenty of those. I was pulling a small handcart carrying a box of loudspeakers. Nori Komuro and I would have had something to talk about.

“Oh, loudspeakers,” Nori Komuro might have said.

A recent e-mail from a reader asked why we list the recordings and systems used by Stereophile writers in their reviews. I responded that we do so in order that readers can place our value judgments in context, and predict how those products might sound with different ancillaries and recordings when they audition the products reviewed at their local high-end audio retailer.

John Adams Son of Chamber Symphony, String Quartet
John Adams, International Contemporary Ensemble; St. Lawrence String Quartet
Nonesuch 523014-2 (CD). 2011. Judith Sherman, prod.; John Kilgore, John D.S. Adams, engs.; Chris Allen, Tom Gloady, Nathan Chandler, asst. engs. DDD? TT: 54:00
Performance ****½
Sonics ****

When John Adams was working on his Chamber Symphony (1992), he became aware that his son Sam was in the next room watching old American cartoons, presumably those by Warner Bros. that used music by the great Raymond Scott. Hyperkinetic borrowings from Scott's witty scores made their way into that earlier work, and now into its successor, a fact hinted at by its humorous title: Son of Chamber Symphony. There's even a moment early on in this new work when the distinctive rhythmic rumble of Scott's masterpiece, "Powerhouse," can be fleetingly heard in what is, overall, a short but very sweet triumph.