Digital Processor Reviews

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Robert Harley Posted: Sep 07, 2010 Published: Oct 07, 1994 0 comments
The arrival of the Mark Levinson No.30 digital processor more than 2½ years ago marked a turning point in digital-audio reproduction. Although the No.30's $13,950 price tag put it out of reach of all but a few audiophiles, its stunning performance suggested that much more musical information was encoded on our CDs, waiting to be recovered by better digital processors. Further, it was inevitable that this level of performance would become less expensive over time. I was more excited by the No.30 than I've been over any other audio product. In fact, its musical performance was so spectacular that it alone occupied the Class A category in Stereophile's "Recommended Components."
Jon Iverson Posted: Jun 21, 2010 0 comments
YBA Design's new WD202 D/A processor and headphone amplifier showed up while I was turning the pages of Don and Jeff Breithaupt's Precious and Few: Pop Music of the Early '70s, recommended by John Marks in his October 2009 "Fifth Element" column. Each page drips with great examples of why the 1970s often wind up on the wrong end of the culture stick (the Osmonds, anyone? Terry Jacks?).
Robert Harley Posted: Jun 07, 2010 Published: Feb 07, 1992 0 comments
Over the past two and a half years, I've auditioned and reviewed a number of digital audio products. It has been a fascinating experience both to watch digital playback technology evolve and to listen to the results of various design philosophies. The road to more musical digital audio has been a slow and steady climb, with occasional jumps forward made possible by new techniques and technologies. Making this odyssey even more interesting (and confounding), digital processors seem to offer varying interpretations of the music rather than striving toward a common ideal of presenting what's on the disc without editorial interjection.
John Atkinson Posted: May 24, 2010 0 comments
As someone who wrestled endlessly with the nine-pin serial ports and the RS-232 protocol with which early PCs came fitted (footnote 1), I welcomed the Universal Serial Bus (USB) interface when I first encountered it a decade ago, on the original Apple iMac. Plug it in. Don't worry. Be happy. The computer peripherals work as they should, which was often not the case with RS-232. It was a given, therefore, that the then-new USB port would be seen as a natural means of exporting audio data from a PC (footnote 2), but the first generation of USB-connected audio devices offered disappointing performance.
Arnis Balgalvis Posted: May 06, 2010 Published: Jan 06, 1990 0 comments
Ain't technology grand! That's what I was thinking while driving to work this morning. Sure, the rain was coming down in buckets, but there I was sitting comfortably in a warm car, listening to music while making tracks at 50mph. A long way from horse-and-buggy days.
Art Dudley Posted: Mar 22, 2010 1 comments
In an industry whose newest products are often as discouragingly unaffordable as they are short of the sonic mark, the Naim Audio Uniti ($3795) stands out. In a single reasonably sized box, the Uniti combines the guts of Naim's Nait 5i integrated amplifier and CD5i CD player with various additional sources: an FM/DAB tuner, and interfaces for an iPod, a USB memory stick, an iRadio, and a UPnP-compatible connected computer or server—all for the price of a very good television set.
Larry Greenhill Posted: Feb 23, 2010 0 comments
In February 2009, I reviewed Bryston Ltd.'s first CD player, the $2695 BCD-1, and was very impressed by what I heard. The BDA-1 ($1995) is the Canadian company's first standalone DAC. It's slim, only 2.75" high, with the engraved company name, model number, and infrared sensor grouped at the extreme left of a front panel of polished aluminum. Farther to the right are two columns of four LEDs each that comprise the sample-rate indicator, which identifies the selected input's signal frequency and whether the BDA-1 has locked to it. Closer to the center is the Upsample control, which governs the conversion of the incoming digital signal synchronously to 192kHz or 176.4kHz. The Upsample LED turns green for 192kHz, red for 176.4kHz. Digital sources are selected by pressing one of eight pushbuttons just right of center: two TosLink, four S/PDIF (coaxial), one AES/EBU XLR, and one USB 1.1, the last accepting only signals with sample rates at or below 48kHz. An LED above each pushbutton lights green for an incoming PCM datastreams and red for other types, including multichannel Dolby Digital streams.
Sam Tellig Posted: Jan 05, 2010 Published: Aug 05, 2009 1 comments
Roy Hall has been Creek Audio's US importer for more than 20 years. Did you know that all Creek gear is now made in China? Just like Cambridge Audio, Quad, and many B&W models. Just like some US speaker brands, for which virtually all parts are made in China but are assembled, it's claimed, in the US. Three cheers for brands like LFD, Rega, Sugden, and Harbeth—all still made in the UK. For French marques made in France. For Italian products produced in Italy. Etc.
John Atkinson Posted: Dec 14, 2009 0 comments
It's now 10 years since the launch of the two high-resolution audio disc formats, SACD and DVD-Audio. Yet, perhaps partly because both were hobbled in various ways to please the record industry, perhaps partly because too many supposed hi-rez releases sounded no better than CD, and perhaps partly because record retailers weren't sure how to display the formats to their best advantage, neither took off in any substantive way. DVD-A disappeared, and SACD survived only as a niche format for high-quality classical releases in both two- and multichannel forms. As we got deeper into the same decade, digital technology, despite various sparks and flashes, went into the doldrums. Mainstream digital technology was increasingly concerned with squashing the music into fewer and more portable bits, not with increased sound quality. Even the concept of "CD sound quality" began to seem an unattainable goal, as MP3 files became the dominant music carrier.
Art Dudley Posted: Nov 20, 2009 0 comments
My favorite moment in the Zack Snyder film Watchmen—apart from the Dylan-fueled title sequence, which itself contains some of the most memorable scenes in recent cinema—comes when retired crimefighter Daniel "Nite Owl II" Dreiberg arrives home to find the doctrinaire and mildly crazy Walter "Rorschach" Kovacs in his kitchen, eating beans straight from the can. The startled Dreiberg asks his visitor, "Would you like me to heat those up for you?"
Art Dudley Posted: Nov 13, 2009 0 comments
Every now and then an affordable product comes along that's so good, even wealthy shoppers want it. Past examples in domestic audio include the Rega RB300 tonearm, the original Quicksilver Mono amplifier, the Grace F9E phono cartridge—even Sony's unwitting CD player, the original PlayStation. Based on word of mouth alone, one might add the HRT Music Streamer+ to that lauded list.
Sam Tellig Posted: Nov 06, 2009 Published: May 06, 2009 2 comments
"The victor belongs to the spoils."—F. Scott Fitzgerald, The Beautiful and the Damned, 1922
Robert Harley Posted: Nov 05, 2009 Published: Aug 05, 1990 0 comments
As an equipment reviewer, I find it helpful to talk to audiophiles and music lovers about their systems and upgrade plans. Fortunately, Stereophile's computer supplier and troubleshooter, Michael Mandel, also happens to be an avid audiophile. I say "fortunately" because I rarely get a chance to talk to people who put down their hard-earned money for hi-fi components. Instead, I usually converse with equipment designers, technicians, and marketing types, hardly people who reflect the buying public. It is thus a valuable education to get feedback from real-world consumers to find out what kind of products they want, their priorities, and how much they're willing to spend for certain levels of performance. They have a view distinctly different from that of the often jaded reviewer who is used to enjoying the best (albeit temporarily) without agonizing over its cost.
Robert Harley Posted: Nov 02, 2009 Published: Aug 02, 1990 0 comments
During an Audio Engineering Society meeting where a former colleague of mine was giving an arcane technical discussion of the optical considerations of data retrieval from a Compact Disc, a longtime AES member whispered to me: "What happened to the good old days of AES meetings when we talked about things like tape bias and saturation?"
Wes Phillips Posted: Oct 16, 2009 0 comments
These days, it seems you can't shake a stick without hitting a USB DAC, but Ayre's QB-9 ($2500) is something a little different. Ayre's marketing manager, Steve Silberman, was adamant: "The QB-9 isn't a computer peripheral. It makes computers real high-end music sources."

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