Phono Preamp Reviews

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Michael Fremer Posted: Aug 19, 2010 0 comments
As long as you're spinning an LP for your listening pleasure, and if digitizing it at a resolution of 24-bit/192kHz is transparent to the analog source, why not record and store the LP on your computer at that high sampling rate for future convenient playback via iTunes or for iPod use, or for burning to CD-R? And, while you're at it, why not record the LP unequalized and apply the RIAA curve in the digital domain, where you're not dependent on capacitors and resistors that are imprecise to begin with, and can drift over time? With no drift of phase or value, the virtual filter's results should be better than with any analog filter. And in the digital domain, you can program in any curve known, and select it at the click of a mouse. Aside from the sweat equity invested in programming it in the first place, it wouldn't add a penny to the program's cost.
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Michael Fremer Posted: Aug 19, 2010 1 comments
The minuscule electrical output of an analog signal from a moving-coil cartridge needs to be boosted before it can be converted to digital and equalized in the digital domain. Of course, you could use your current phono preamplifier and record an equalized signal to hard disk, but then you wouldn't get to experience Pure Vinyl's digital RIAA correction—nor would you be able to avail yourself of all the equalization curves provide by Pure Vinyl, of which there are almost too many to count.
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Michael Fremer Posted: Aug 19, 2010 0 comments
The minuscule electrical output of an analog signal from a moving-coil cartridge needs to be boosted before it can be converted to digital and equalized in the digital domain. Of course, you could use your current phono preamplifier and record an equalized signal to hard disk, but then you wouldn't get to experience Pure Vinyl's digital RIAA correction—nor would you be able to avail yourself of all the equalization curves provide by Pure Vinyl, of which there are almost too many to count.
Michael Fremer Posted: Jul 06, 2010 0 comments
Why bother with three phono preamps most of us can't afford? For the same reason the enthusiast automobile magazines cover the newest Ferraris and Lamborghinis: just reading about them is fun.
Art Dudley Posted: Jun 28, 2010 0 comments
The best result of mathematics is to not need it.—Oliver Heaviside, 1850–1925
Sam Tellig Posted: Feb 02, 2010 Published: May 02, 2009 1 comments
Not being fond of self-flagellation, I don't usually do analog. I am not a fuddy-dudley, nor am I especially fremerous.
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Michael Fremer Posted: Sep 24, 2009 Published: Jun 24, 2009 0 comments
This tiny, lightweight, battery-powered jewel is loosely based on Nagra's VPS phono stage that I reviewed in October 2008 but uses bipolar transistors instead of tubes. The bottom of the company's familiar brushed-aluminum case has a grippy rubber material die-cut to spell Nagra. It's intended to keep the preamp from sliding, but stiff cables will have the BPS hanging in the air if you're not careful. The BPS costs $2399.
Art Dudley Posted: Sep 18, 2009 Published: Dec 18, 2002 0 comments
In an ideal world, I'd have every phono section I've reviewed in the past 16 years on hand to compare with these three and with all that arrive in the future. But because I have a life, I don't, and I wouldn't even if I could, though some readers (and one retailer) have insisted that that's the only way that I could possibly be of any use to them. Ha! And for those who are concerned that I've neglected the Manley Steelhead, not so! It's still my reference.
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Michael Fremer Posted: Aug 31, 2009 Published: May 31, 2009 0 comments
I first spotted Audia Flight's exquisite-looking two-box phono preamplifier ($6100) at last year's Hi-End show in Munich, and now that Musical Sounds is importing Audia Flight gear, a review of the Phono seemed a good idea. I know nothing about Audia Flight or the designer, or what Italian audiophiles think of them, but the more time I spent with the versatile, exquisitely built Phono, the more I liked everything about it.
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Jonathan Scull Posted: Aug 10, 2009 Published: Dec 10, 1993 0 comments
Just as the Trappist Monks of Digital Audio are once again grabbing at the bellpulls to ring the death knell of analog, another fine piece of gear pops up dedicated exclusively to LP playback: the American Hybrid Technology Phono Stage. To one of the Analog Committed, this is good news. That the unit sounds as wonderful as it does is even better news. Anything else? Pull up a pew, Brother.
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John Atkinson Posted: Feb 06, 2009 Published: Jan 06, 1989 0 comments
Thomas Alva Edison may have had a fully equipped laboratory, with a team of assistants slaving every day over ideas to be adopted when ripe as those of the great inventor, but the image of American ingenuity which rings true to me is of the lone tinkerer, working alone and mixing a generous dose of good ol' Yankee know-how with the sweat of his brow—a lot of it. These days, with the faithful PC and a hardworking CAD program at his side to do the math, the lone tinkerer seems to be thicker on the ground than ever, to judge by the humongous numbers of small companies selling high-end hi-fi components as revealed in Stereophile's readership survey (see p.5). Whether these loners will ever rise above their origins depends, among many other things, on their ideas being truly worthwhile.
Art Dudley Posted: Feb 01, 2009 Published: Jan 01, 2009 0 comments
I was walking through the woods one day when I happened on a large, flat rock near the base of an old ash tree. Conditioned as I am from such rambles with my daughter, whose interest in wildlife echoes that of my own childhood, I bent down and lifted one end of the rock, hoping to catch a glimpse of some exotic creature or another: perhaps a delicate ring-necked snake, or a plasticky-looking red eft. The rock came loose without too much effort and teetered on its broadest edge, but before I could let it flip to one side, I recoiled in horror: There, amid the millipedes and ant larvae, was a cluster of teeny-tiny, nasty-looking old men, writhing in such a tangle that I couldn't even count them. They were bespectacled, to a one, and mostly bald—I could tell quite easily, despite the berets worn by some of them—and each pair of feet was shod in a teeny-tiny pair of off-brand Birkenstock copies, with thin, shiny black socks underneath.
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Michael Fremer Posted: Sep 17, 2008 0 comments
Not that many years ago, it seems, every sound crew in Hollywood and around the world recorded production sound using a compact, open-reel analog tape recorder made by Nagra. The first iteration of the Swiss-made machine appeared in the early 1950s. Shortly thereafter, with the addition of an inaudible recorded tone that allowed easy syncing to picture, the Nagra recorder became the industry standard, and remained so through the 1980s. To this day, Nagra's line of audio products retains the look of those early recorders.
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Michael Fremer Posted: Jul 29, 2008 Published: Jul 30, 2008 0 comments
The German company AQVOX Audio Devices has produced an innovative moving-coil/moving-magnet solid-state phono preamplifier, the Phono 2Ci, that's as intriguing for its technology and performance as it is for its relatively low price: $1400. The zero-feedback, op-amp–free circuit uses a compact switch-mode power supply that's built into the chassis and features conventional voltage gain for moving-magnet cartridges via its RCA jacks, and current gain for moving-coil cartridges through the balanced XLR inputs. Rear-panel switches select between RCA or XLR inputs and offer a convenient ground lift. Either the single-ended or the balanced outputs can be used with either input. Unfortunately, the tight spacing of the RCA input and output jacks, which are mounted on the circuit board, will somewhat limit your choice of cables: Pairs of thick-barreled plugs will have difficulty fitting.
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Robert Harley Posted: Apr 09, 2008 Published: Jun 09, 1992 0 comments
What's this? A review of a $3000 moving-coil step-up transformer in this digital day and age? Yep. Although the market for such a product is small, the fact that the Expressive Technologies SU-1 step-up transformer enters previously uncharted state-of-the-art territory warrants these pages of editorial space. Furthermore, LP playback appears to be alive and well at the upper end of the high-end spectrum, a market segment addressed by the SU-1 (footnote 1).

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