Digital Processor Reviews

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Jon Iverson Posted: Aug 27, 2014 1 comments
Professional digital audio is like gravity to consumer audio's antigravity: pro gear draws music into digital files, and consumer audio releases those same notes back out again.

It's not surprising, then, that many audiophile digital-to-analog converters come to us from the pro-audio industry, which has a hierarchy similar to the consumer side: value-oriented products all the way up to ultimate-performance brands. Examples of pro-audio companies that also offer audiophile DACs for consumers abound: Benchmark, CEntrance, Grace Design, Korg, Mytek, and Nagra, to name a few.

Art Dudley Posted: Aug 22, 2014 2 comments
It's like hearing the name of an old friend and then seeing him, in your mind's eye, as he was when you were both much younger: Whenever talk turns to Boulder, Colorado–based PS Audio, I can't help picturing that company's Model IV preamplifier, of the early 1980s—most likely because that was the preamp I longed to own at the time. (Tragically, I couldn't afford to buy it, so I struggled on with my NAD 1020.)
Sam Tellig Posted: Jul 18, 2014 Published: Apr 01, 2014 10 comments
They can't sound very good—they're not big enough. As we all know, in hi-fi, big products mean big performance. Musical Fidelity's V90 series can't be any good. They don't cost enough. With your golden ears, you must pay through the nose.

The V90 components turn all this around. They are tiny. Inexpensive. Beautifully built.

John Atkinson Posted: Jul 18, 2014 Published: Mar 01, 1989 1 comments
389accu.promo.jpg$13,000! You could buy two Hyundai Excels for that kind of money. Or one 5-liter Ford Mustang. Or two-thirds of a Saab 900 Turbo. How could the purchase of this Accuphase two-box CD player be justified on any rational grounds? What if it did offer state-of-the-art sound quality? Would it really be 50 times better than a humble Magnavox? Would it even be 4.3 times better than the California Audio Labs Tempest II CD player? And would it approach the sound quality routinely offered from LP by the similarly priced Versa Dynamics 2.0 turntable?
Art Dudley Posted: Jul 03, 2014 0 comments
In the summer of 1999, Sony held a press event in New York City to mark the introduction of the Super Audio Compact Disc, then the sole domestic embodiment of the Direct Stream Digital (DSD) technology, jointly developed by Sony and Philips. The new format was hailed, in prepared remarks, by an impressive list of audio and music dignitaries: Nobuyuki Idei, then president of Sony Corporation; Steven Epstein, senior executive producer for Sony Classical; Yo-Yo Ma, appearing in a video created for the event; and Wynton Marsalis, appearing in person. All of the speeches—every single one of them—flattered SACD by likening its sound to that of the analog LP.
Robert Harley Posted: Jun 18, 2014 Published: Aug 01, 1991 0 comments
No, the $399 price listed in the specification block isn't a misprint. And yes, the Audio Alchemy Digital Decoding Engine v1.0 is indeed a full-function outboard digital processor. And since this is the August issue, not April, you can stop worrying that this review is some kind of joke.

The $399 Digital Decoding Engine is for real.

Art Dudley Posted: May 27, 2014 11 comments
Ten years ago, the average consumer was unaware that he or she needed an e-book reader. Since that time, neither those people nor the authors whose books they consume have changed very much. But the people in between have grown restless and unsatisfied, and it is they who call the tune. Consequently, many of you have gone from owning books to sort of, kind of owning books (and sort of, kind of not).
John Marks Posted: Apr 10, 2014 2 comments
Were it my place to hand out awards for "The Most Forthright People in Audio," Michael Grace of Grace Design would be at the top of the list. Years ago, after I'd given stellar recommendations of Grace's 901 and m902 headphone-amplifier-DAC-line-stage models, I asked Grace if I could audition his full-rack–size, more fully featured m904 Stereo Monitor Controller. He told me that he didn't think that was necessary, because the m904's sound was extremely similar to the sound of the smaller m902—it just had a different feature set, and he believed that the additional features were not things that Stereophile readers were likely to need. That is the only case I can recall of a manufacturer's declining an offer of additional coverage in Stereophile.
Jon Iverson Posted: Mar 28, 2014 2 comments
Back in high-end audio's golden days—for the purposes of this story, the mid- to late 1980s—my audio store, Audio Ecstasy, had a service tech named Tom Hewitt. Were he still with us (and I wish he were), Tom would appreciate the radical case design of the MSB Analog DAC. Tom loved not only to fix things, but to see what happened when things were violently stressed. He tested the limits of component construction.
John Atkinson Posted: Mar 07, 2014 1 comments
Back in the summer of 2009, USB-connected D/A processors that could operate at sample rates greater than 48kHz were rare. Ayre Acoustics had just released its groundbreaking QB-9, one of the first DACs to use Gordon Rankin's Streamlength code for Texas Instruments' TAS1020 USB 1.1 receiver chip. Streamlength allowed the chip to operate in the sonically beneficial asynchronous mode, where the PC sourcing the audio data is slaved to the DAC. But high-performance, USB-connected DACs like the Ayre were also relatively expensive back then, so in the January 2010 issue of Stereophile I reviewed a pair of soundcards from major computer manufacturer ASUS , the Xonar Essence ST and STX, which, at $200, offered a much more cost-effective means of playing hi-rez files on a PC.
Jon Iverson Posted: Mar 07, 2014 0 comments
Most folks don't even know they exist, but the Channel Islands are a chain of eight moderately sized mountains poking through the Pacific Ocean along the coast of southern California, between Santa Barbara and San Diego. The most famous of these is Catalina Island and its city, Avalon, which sit opposite San Clemente. The other Channel Islands are relatively wild and have been preserved mostly uninhabited.
Sam Tellig Posted: Feb 14, 2014 Published: Dec 01, 2013 6 comments
Am I the only one who values content and convenience over sound quality?

There. I've said it. I am not an audiophile; ie, someone who's in love with recorded sound for its own sake. The search for ideal sound can leave a person burned out and broke.

Robert Harley Posted: Feb 13, 2014 Published: Mar 01, 1992 1 comments
Since the first digital processor on the market using UltraAnalog DACs appeared (the $12,000 Stax DAC-X1t, reviewed in August 1990, Vol.13 No.8), there has been a proliferation of good-sounding processors using this extraordinary—and expensive—part. Among these are the Audio Research DAC1, Audio Research DAC1-20, VTL Reference D/A, and the groundbreaking Mark Levinson No.30 reviewed last month.
John Atkinson Posted: Feb 04, 2014 0 comments
Erick Lichte's review of Benchmark's DAC2 HGC D/A converter in this issue gave me an ideal opportunity to spill some ink on the company's ADC1 USB A/D converter. The ADC1 is housed in the same small case as the DAC (one rack unit high, half the rack unit width), and is offered with a black front panel with rack ears, or a silver aluminum panel without ears, either for $1795.
John Atkinson Posted: Jan 31, 2014 Published: Feb 01, 2014 10 comments
I was alerted to the new VEGA D/A processor from Chinese manufacturer AURALiC by Michael Lavorgna's rave review for our sister site AudioStream.com in April 2013: "Everything I played through the Auralic Vega was equally wow-inducing. Everything. . . . Music I've heard hundreds of times was presented with a crisp, clean, and delicate clarity that was simply uncanny and made things old, new again. . . . Its ability to turn music reproduction into an engaging and thrilling musical experience is simply stunning."

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