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Even as digital/analog processors were becoming a hot product category in the early 1990s, audiophiles were also learning that timing uncertainties in the AES/EBU and S/PDIF serial datastreams—jitter—would compromise any improvement in sound quality offered by these DACs. Some companies therefore introduced products to reduce or eliminate jitter—in the November 1994 issue of Stereophile, Robert Harley reviewed three such products: the Audio Alchemy DTI Pro, the Digital Domain VSP, and the Sonic Frontiers UltrajitterBug. I still have Stereophile's review samples of the UltraJitterBug and VSP, along with two contemporary DACs: a PS Audio UltraLink and a Parts Connection Assemblage DAC-1.

As our reviews of these products were published before Paul Miller's and the late Julian Dunn's development of the "J-Test" diagnostic signal, I performed J-Test jitter measurements to bring that 1994 review into the 21st Century. You can see what I found here.

B>Cecilia Bartoli: Farinelli
Cecilia Bartoli, mezzo-soprano; Il Giardino Armonico, Giovanni Antonini, cond.
Decca 4850214 (24/96 download). 2019. Arend Prohmann, prod. and editor; Philip Siney, eng.
Performance: *****
Sonics: ****

When I first heard mezzo-soprano Cecilia Bartoli in person some 29 years ago, at her West Coast debut in the "Cal Performances" series at Berkeley's Hertz Hall, she was just 24 years old. Along with the rest of the audience, I was astonished at her ability to ally phenomenal coloratura technique with an out-of-the-box range of expression—unheard since the prime of Maria Callas. It was clear why Decca had already signed her and released her first recording the year before, when she was just 23.

It's 3am. You're lying in bed. Something woke you up—you don't know what it was. You pull back the covers, get up, and tiptoe out to your listening room.

There, standing by your record rack, thumbing through your prized LPs, is a man in black (no, not Johnny Cash—a different man in black). You see a bulge in his pocket; it could be a gun. Something shiny catches your eye—there's a switchblade knife between his teeth! At his feet, leaning against your record shelf, is a cudgel. Oh, and it looks like he might have some infectious disease. You, of course, are in your PJs.

You notice, at the top of the stack of records that he holds under his arm, that one record, the one you love the most, the one you can't live without.

On Friday, January 17 from 5-9pm, Innovative Audio in New York City will debut the Wilson Chronosonic XVX, Wilson's flagship loudspeaker.

In September 2019, I made an afternoon visit to National Sawdust, a vibrant, innovative performance space in Williamsburg, Brooklyn, to attend a demonstration of the new Constellation and Spacemap systems installed there by Meyer Sound. According to Meyer Sound designer Steve Ellison, the two systems permit control of the space's acoustics (Constellation) and empower performers and sound designers to construct a soundscape (Spacemap) in which voices, instruments, and other sounds can be located virtually anywhere within as well as beyond the confines of the performance space.

From the front, the LS5 looks identical to Audio Research's popular LS2: two knobs on either side of the Audio Research nameplate, and a row of toggle switches along the bottom. But that's where the similarities end; the LS5 is a completely different animal from the LS2, or even the balanced LS2B.

Tell me now: When you're there in the scene, watching Lord Voldemort chase Han Solo through the Cave of the Klan Bear, how often do you notice that the sounds you're experiencing are being pumped at you from five black-painted room boundaries, while the flickering-light images approach from only one? Moreover, in a parallel, more quotidian reality, you're sitting upright in your seat, noisily chomping popcorn while absorbing—and processing—massive amounts of sensory data: Did you ever consider the sensual, mechanical, and psychological complexity of a moment like this, and how fundamentally unnatural it is?