Miscellaneous

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Miscellaneous
VPI Magic Brick
Allen Edelstein  |  Jun 10, 2020  |  First Published: May 01, 1982  |  38 comments
The VPI Magic Brick is an 8lb block of steel laminations, about 5" by 3" by 2", encased in a nicely-finished oak box for aesthetic appeal and for protecting whatever the brick is sitting on from scratches. Placing the Brick over the power transformer of a piece of electronic gear is supposed to improve the sound of your stereo system.
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Miscellaneous
Book Review: Hi-Fi: The History of High-End Audio Design
Jim Austin  |  Jan 30, 2020  |  7 comments
Hi-Fi: The History of High-End Audio Design, by Gideon Schwartz, Phaidon Press, 2019. 272pp. $84.97, hard cover.

The ongoing evolution of hi-fi can be measured in any number of ways. Most obviously, we see that evolution in the technologies associated with our industry: in big breakthroughs—mono to stereo, tubes to transistors, analog to digital—as well as incremental improvements in materials and manufacturing techniques.

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J. Gordon HoltMiscellaneous
Rocktron CS 5.2.5 Circle Surround decoder
J. Gordon Holt  |  Dec 12, 2019  |  First Published: Aug 01, 1998  |  4 comments
Editor's Note: Published in 1998, this was the final review written by Stereophile's founder, the late J. Gordon Holt in the 37 years he was associated with the magazine. In it he expounds on his passion for experiencing recorded music in surround sound. Our continuing focus on two-channel products and recordings was one of the reasons Gordon eventually resigned, in August 1999.—John Atkinson
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HistoricalJ. Gordon HoltMiscellaneous
Revox A-77 open-reel tape recorder
J. Gordon Holt  |  Nov 06, 2019  |  First Published: Jun 01, 1970  |  1 comments
The Revox A-77 has extremely good speed regulation, vanishingly low wow and flutter, very low noise, superb tape handling, and the smoothest, widest-range frequency response of any recorder we have ever tested.

The portable version, with built-in monitor amps and speakers, is very compact for a machine with 10½ reel capacity, and is easily carried by one person. Now that the later version is equipped with a flutter-filtering tension arm, our only criticism of the A-77 is its use of three-circuit jacks for the micro phone inputs instead of the XLR-type receptacles that are considered to be "standard" in the US for on-location audio recording.

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FeaturesMiscellaneous
Book Review: 99% True: Almost a National Bestseller
John Atkinson  |  Oct 08, 2019  |  18 comments
1019psbbok.promo99% True: Almost a National Bestseller, by Paul McGowan. Lioncrest Publishing, 2019. 364pp. $25.00, hard cover; $15.99, paperback; $9.99, Kindle e-book.

To many audiophiles, high-end audio manufacturers must seem like monolithic entities, enduring for what seems like forever, like cliffs beside a familiar path. But as Paul McGowan explains in this unputdownable autobiography (footnote 1), behind the facade of stability things can be in financial turmoil, with success equally as risky as failure.

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Art Dudley ListeningMiscellaneous
Listening #198: IsoAcoustics & Audio-Creative
Art Dudley  |  May 21, 2019  |  34 comments
It's a toss-up: The house where my family and I lived for 15 years was bigger than the one we have now, and had a much nicer view. On the other hand, we now live in a less economically depressed region, as suggested by the relative scarcity of inflatable lawn decorations. During the last year I saw in my neighborhood far fewer leprechauns, reindeer, Easter Bunnies, purple-and-green Draculas, and turkeys wearing pilgrim hats (which makes about as much sense as Russian soldiers wearing lederhosen). I find those things unspeakably sad, because they're horrible, cheap, gaudy wastes of money.
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MiscellaneousReference
Book Review: High Performance Loudspeakers, Seventh Edition
John Atkinson  |  Mar 19, 2019  |  9 comments
High Performance Loudspeakers: Optimising High Fidelity Loudspeaker Systems, Seventh Edition, by Martin Colloms. John Wiley & Sons, Inc., 2018. Paperback, 696 pp., $95. Available as an eBook, $79.99.

"Listen to that—that's what I mean by 'cone cry!'"

It was 1979. I'd been taking part in a blind listening test of loudspeakers organized by Martin Colloms (footnote 1) for the British magazine Hi-Fi Choice and, after the formal sessions had ended, had asked Martin to explain something I'd heard. A drive-unit's diaphragm produces cone cry when it resonates at a frequency unconnected with the musical signal it is being asked to produce; we had been using an anechoic recording of a xylophone, and one of the loudspeakers we'd been listening to was blurring the pitches of some of the instrument's notes.

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Media Server ReviewsMiscellaneous
LG V30 Hi-Res smartphone with MQA
Jason Victor Serinus  |  Apr 24, 2018  |  53 comments
"Phones are the gateway device," proclaimed Marc Finer, executive producer of the Hi-Res Pavilion, at the start of the 2018 Consumer Electronics Show. When he pointed to LG Electronics' V30 Hi-Res+MQA smartphone, which includes streaming apps for Qobuz, Tidal, and YouTube, I sensed the truth in his words. The latest stats from survey company MusicWatch confirm that at least 87% of smartphone owners use a music-streaming service, including the largest, YouTube. Twenty percent of owners said that they stream music/music-related content daily, and 39% stream five or more days per week.
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Miscellaneous
IsoAcoustics Orea Audio Equipment Isolators
Robert Deutsch  |  Jan 30, 2018  |  7 comments
After I'd concluded my critical listening sessions with the PS Audio Stellar M700s that I review elsewhere in this issue, I got a call from Dave Morrison of IsoAcoustics, in Markham, Ontario, makers of the Gaia loudspeaker isolation feet. He told me that they had a new product, the Orea, that applies to audio electronics—preamps, power amps, DACs—the isolation technology used in the Gaia.
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MiscellaneousRoom Treatment Reviews
IsoAcoustics Gaia loudspeaker isolation feet
Robert Deutsch  |  Sep 14, 2017  |  17 comments
IsoAcoustics Inc. has its head office in Ontario and its manufacturing facilities in China, and is headed by Dave Morrison, who for 20 years has been involved in designing radio and television studios for the Canadian Broadcasting Corporation. The IsoAcoustics products are the result of this experience. Although relatively new on the consumer-audio market, IsoAcoustics' speaker-isolation products have gained wide acceptance in pro audio; their client list of recording and mastering studios includes Blackbird (Nashville), Mastering Palace (NYC), Flux (NYC), United Recording (LA), the Boston Symphony Orchestra, Skywalker Ranch, and Abbey Road.
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HistoricalJ. Gordon HoltMiscellaneous
Revox G-36 open-reel tape recorder
J. Gordon Holt  |  Oct 06, 2016  |  First Published: Jul 01, 1968  |  4 comments
The Swiss-made G-36 recorder had earned an enviable reputation among perfectionists during the few years that it has been available in the US, and our inability to test one (because of a backlog of other components for testing) became increasingly frustrating to us with each glowing report we heard from subscribers who owned them. Now that we have finally obtained one through the courtesy of ELPA (footnote 1), we can see what all the shouting was about, but we also have some reservations about it.
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MiscellaneousPhono Accessory Reviews
Synergistic Research PHT
Michael Fremer, Robert Deutsch  |  Sep 13, 2016  |  26 comments
Synergistic's PHT ($199/set of two) is a very tiny, tweezer-ready HFT designed to placed atop a phono cartridge, and is marketed with a nod and wink: "grown in California, legal in all 50 states" (PHT is pronounced pot). Analog vets might remember Apature's line of moving-coil cartridges from the 1980s, which included the models Panama Red, Maui Blue, and Koce (which was white). Think I'm handing you a line? I've got a Koce here.
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Budget Component ReviewsComputer Audio ReviewsDigital Processor ReviewsMiscellaneous
AudioQuest JitterBug USB noise filter
John Atkinson  |  Sep 03, 2015  |  19 comments
I got an early start on computer audio. At the end of the last century I was using WinAmp with first a CardDeluxe PCI soundcard, then a similar card from RME, to play files on a Windows PC. After I became a MacPerson, I used FireWire audio interfaces from pro-audio company Metric Halo and an inexpensive USB-connected ADC/DAC from M-Audio. But it was with the USB version of Benchmark's DAC 1 that the computer began taking over from physical discs for my music listening. At first I used iTunes au naturel, but as I acquired more high-resolution files, I began using Pure Music to handle all the tedious audio housekeeping, assigning as a dedicated music server a G4 Mac mini I'd bought in 2006.
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Audacious AudioCD Player/Transport ReviewsMiscellaneous
Simaudio Moon Evolution 820S power supply
Michael Fremer  |  Nov 13, 2014  |  6 comments
Can a power-supply upgrade produce audible sonic benefits? If you've upgraded the power supply of a phono preamplifier, you probably don't need to be convinced that it does, and those usually cost only a small percentage of the price of the model they power. But to add Simaudio's Moon Evolution 820S power supply ($8000) to the Moon Evolution 650D DAC–CD transport ($9000), which I reviewed in the November 2011 issue, almost doubles the latter's cost—though the 820S can be used to simultaneously power two Moon Evolution components, like the 750D DAC ($14,000), 740P preamplifier ($9500), and 610LP ($7500) and 810LP phono preamplifier ($13,000).
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Miscellaneous
ENIGMAcoustics Sopranino electrostatic supertweeter
John Atkinson  |  May 30, 2014  |  16 comments
For Jason Victor Serinus, one of the highlights of the 2013 T.H.E. Show in Newport Beach, California, was the public debut of the Sopranino—a horn-loaded, self-polarized, electrostatic supertweeter from EnigmAcoustics. In his report, Jason wrote about the sound of a pair of Sopraninos used atop Magico V3 speakers: "only folks with severe hearing loss would have missed how the sound opened up when the Sopranino was switched in." Well, as you can read later, I don't have hearing loss, and I did also hear an improvement with the Sopranino. So when I visited the Californian company's dem room at the 2014 Consumer Electronics Show, in Las Vegas, I asked for review samples.
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