John Atkinson

John Atkinson  |  Oct 14, 2008  |  0 comments
A close-up of the Wavelength Cosecant v3 DAC ($3500) that I used for my hi-rez dems. Using a single 6GM8/ECC86 dual-triode to drive the single-ended, transformer-coupled output, this is one of a very few USB-input DACs on the market that runs the USB link in "asynchronous" mode, whereby the DAC controls the flow of data from the computer and not vice versa, thus drastically reducing word-clock jitter when those data are fed to the DAC chip. I was impressed by its sound, playing 24-bit/88.2kHz files from my laptop, so I have asked for a review sample.
John Atkinson  |  Oct 14, 2008  |  0 comments
As Jason mentioned earlier, I gave 5 hour-long presentations at RMAF entitled "Hearing is Believing—Is Hi Rez Digital the Future of Audio?" To allow Showgoers to hear the differences between the hi-rez masters of my recordings and CD and MP3 versions, I used a system put together by HiFi+ editor Roy Gregory for his demonstrations of system tuning—Ayre A7-xe integrated amplifier, Avalon Evolution NP2.0 speakers (which I reviewed in July, Vertex AQ cables, Stillpoints rack and speaker stands, and Quantum QX4 "field generator"—to which I added a MacBook running iTunes 8 driving a Wavelength Audio Cosecant USB DAC.
John Atkinson  |  Oct 12, 2008  |  3 comments
A surprise outside the Hyatt as I went to get ready for my Sunday morning hi-rez audio dems was this SCCA Mazda race car. Sponsored by RMAF, Focal, Aesthetix, and Tara Labs, among others, driver Christine Jerritts had me enthralled telling me what it was like to take the infamous corkscrew turn at Laguna Seca Raceway. I could have lingered for a long time , but I had to get to work...
John Atkinson  |  Oct 03, 2008  |  4 comments
Because loudspeakers interact with the acoustics of the room in which they are used, optimizing their positions within that room pays major dividends. Inexpensive speakers, optimally set up, may well outperform more expensive models just plonked down willy-nilly.
John Atkinson  |  Sep 27, 2008  |  First Published: Sep 26, 2008  |  0 comments
In June 2007, I again recorded Minnesotan male choir Cantus live on location, this time in the glorious acoustic of Sauder Concert Hall at Goshen College, in Goshen, Indiana. The resultant CD, While You Are Alive (Cantus CTS-1208), is the eighth I have engineered of the group; it is a collection of 20th- and 21st-century works that explores, illuminates, and celebrates all stages of life, from birth to death.
John Atkinson  |  Aug 26, 2008  |  First Published: Aug 08, 1991  |  0 comments
Blame the Puritans! say I. The high end has always had an ostinato accompaniment of grumbles from those who appear to feel that it is immoral to want to listen to music with as high a quality as possible. In a recent letter, for example, Fanfare and Stereo Review contributor and author Howard Ferstler states that "the audio world has more products of bogus quality and shills promoting them than any other industry, bar none," and trots out the old saw that audiophiles "end up spending an excessive amount of money on equipment or tweaking techniques of surprisingly dubious quality."
John Atkinson  |  Aug 15, 2008  |  0 comments
Audio shows are where reviewers search out products for possible review. We are always on the lookout—or listenout—for components that transcend the boundaries of the ordinary, that set the pulse racing a little faster. The 2007 Rocky Mountain Audio Fest, held in Denver last October, was the first RMAF I had attended, and among the rooms that impressed me was one featuring components from the Japanese brand Esoteric, which was celebrating its 20th anniversary.
John Atkinson, Various  |  Aug 10, 2008  |  First Published: Aug 10, 1989  |  0 comments
Loudspeaker designers are dreamers. Something takes hold of a man—the fact that loudspeaker designers are all men must be significant—and he wrestles with recalcitrant wood, arcane drive-units, and sundry coils, capacitors, and cables, to produce something which will be individual in its sound quality yet inherently more true to the original sound. An impossible task. Yet if there were to be an aristocratic subset of those dreamers, it would be those who have taken upon themselves the burden of producing electrostatic loudspeakers. For these farsighted engineers, there is no standing on the shoulders of others, there is no recourse to tried and tested combinations of other manufacturers' drive-units. Every aspect of the design, no matter how apparently insignificant, has to be created afresh from first principles. For a new electrostatic design to produce a sound at all represents a great triumph for its progenitor, let alone having it sound musical. And to produce an electrostatic loudspeaker that is also possessed of great visual beauty is indeed a bonus.
John Atkinson  |  Aug 01, 2008  |  First Published: Nov 01, 1988  |  0 comments
The last time I was in England, I happened to be rummaging through some boxes in my mother's garage, boxes containing photographs, my old school books, concert programs, diaries, postcards—all the bric-a-brac you collect throughout your life that you'll never have a need for and can never discard. If anything, such rubbish is perhaps the nearest thing to roots that anyone can have these days. Among the boxes was an amplifier that had been an everyday companion of mine for many years, the vintage Vox AC100 I had used to amplify my Fender bass when on the road.
John Atkinson, Fred Kaplan  |  Jul 27, 2008  |  0 comments
There's a retro, Heathkit vibe to the curiously capitalized PrimaLuna ProLogue Eight CD player: a shelf of glowing tubes and a chunky transformer case perched atop a plain black chassis. But on closer inspection, it seems there's much more going on here. The chassis is made of heavy-gauge steel, with (according to the manual) a "five-coat, high-gloss, automotive finish," each coating hand-rubbed and -polished. The tube sockets are ceramic, the output jacks gold-plated. Inside, separate toroidal transformers power each channel. Custom-designed isolation transformers separate the analog and digital devices, to reduce noise. The power supply incorporates 11 separate regulation circuits. The output stage is dual-mono with zero feedback. Audio-handling chips include a Burr-Brown SRC4192 that upsamples "Red Book" data to 24-bit/192kHz, and one 24-bit Burr-Brown PCM1792 DAC per channel. Only the tiny silver control buttons (on the otherwise hefty faceplate of machined aluminum) betray a whiff of chintz.

Pages

X