Solid State Power Amp Reviews

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Steven W. Watkinson J. Gordon Holt Sam Tellig Posted: Aug 10, 2009 Published: Apr 10, 1985 0 comments
When I first heard the Eagle 2 at the 1985 Winter CES I knew this amplifier was a winner. I was eager for a chance to get my hands on it, but I also knew that J. Gordon Holt was champing at the bit to do the same. So it came as both a surprise and a delight when ye Gracious Editor gave me first crack at the Eagle 2. I wasn't disappointed; the little Eagle more than lived up to expectations. It's not the best power amplifier I've ever heard, but it's damn good. It is, in fact, better than its big brother, the Eagle 7A, in significant ways; in view of the 2's reasonable price, that's saying a lot.
Art Dudley Posted: Jan 26, 2003 0 comments
Modern hi-fi is little more than a way of getting electricity to pretend that it's music. Of course, good source components remain all-important, and even if loudspeakers are imperfect, most of us can find one or two that suit our tastes, if not our rooms and the rest of our gear.
Herb Reichert Posted: Sep 20, 2016 7 comments
Every time a new audio technology enters the marketplace, a debate begins about its relative merit. That debate never ceases, even decades after the technology first came (and sometimes went). Turntable platters driven by belts vs rims vs idlers vs directly by their motors. Analog vs digital. Tubes vs solid-state. Triodes vs pentodes, Single-ended vs push-pull. Objectivism vs subjectivism. The power and seriousness of each of these debates has splintered our global hobby into diverse tribes, cults, and subcults—and therein lies one of the chief joys of being an audiophile: participating in cult rivalries.
John Atkinson Posted: Nov 29, 2011 Published: Sep 01, 1991 1 comments
To judge from the $6400 Mimesis 8, Goldmund walks its own way when it comes to power amplifier design. High-end solid-state amplifiers from US companies like Krell, Mark Levinson, Threshold, and the Jeff Rowland Design Group marry massive power supplies to large numbers of output devices (these often heavily biased to run in class-A), built on chassis of such nonmagnetic materials as aluminum. By contrast, the Mimesis 8 has a magnetic (steel) chassis, and uses a relatively modest power supply, that for each channel based on two main 4700µF reservoir capacitors. The 8 offers just two pairs per channel of complementary output MOSFETs (Hitachi K134/J49). These carry a modest bias current of around 80mA total.
Thomas J. Norton Posted: Aug 04, 2016 Published: Apr 01, 1993 4 comments
Boy, do we ever get letters. From readers angry that we review too many expensive products. From readers depressed that we review too many affordable products. From readers bemoaning our digital coverage. From readers asking when we're going to get with the 21st century and stop gushing over analog. From readers wanting more coverage of tube products. From readers wanting more coverage of MOSFET amplifiers designed for high voltage gain on the output stage.
J. Gordon Holt Posted: Mar 03, 2010 Published: Jan 03, 1987 0 comments
Some time ago in these pages, Anthony H. Cordesman observed rather ungraciously that the whole line of Hafler electronics "could do with reworking." This was interpreted by many readers—including the good people at the David Hafler Company—as meaning that AHC felt the entire Hafler line to be mediocre. In fact, he does not. (He had given a Hafler product a positive review a few issues previously.) Tony's comment, however, did express a sentiment that most of us at Stereophile have shared for some time: a feeling that Hafler products had slipped from the position of sonic preeminence which they enjoyed during the 1960s and '70s to one of mere excellence in a field where only preeminence is acclaimed.
John Atkinson Posted: Oct 15, 2004 Published: Oct 01, 2004 0 comments
One of the highlights of recent Consumer Electronics and Home Entertainment shows has been the demonstrations of sound quality put on by Australian amplifier manufacturer Halcro with Wilson Audio loudspeakers. At my first exposure to one of these demos—described in my April 2002 "As We See It"—enormous dynamic range was coupled with a grain-free presentation and almost holographic stereo imaging to produce a breathtaking sweep of sound. Paul Bolin reviewed Halcro's dm58 monoblock in October 2002, and that amplifier was subsequently voted this magazine's "Amplification Component of 2002" by our reviewers.
Paul Bolin Posted: Oct 13, 2002 0 comments
Revolutionary is a word that's tossed around all too lightly in the world of audio. The understandable impulse to tout every new development as a quantum leap forward in sound reproduction has made it difficult to sort out the evolutionary from the truly groundbreaking. And there's not that much left to do in amplifier design that is worthy of being described as "revolutionary," or so it seems. Vacuum-tube circuitry has been thoroughly understood since the late 1940s, and 40 years of development of solid-state has rendered it, in its finest implementations, a worthy competitor and alternative to the venerable tube.
Brian Damkroger Posted: Aug 19, 2006 0 comments
When I went to my shelf of Stereophile back issues to find Paul Bolin's seminal review of the Halcro dm58, I was shocked to find myself leafing further and further back—through not only 2004 but 2003 as well, all the way back to October 2002 (Vol.25 No.10). It doesn't seem possible that it's been almost four years since Halcro exploded onto our radar screens, the dm58 emblazoned on that issue's cover alongside the banner headline "THE BEST AMPLIFIER EVER!"
Art Dudley Posted: Apr 16, 2006 0 comments
Within a few years of entering the US market, Australian audio manufacturer Bruce Halcro Candy cemented his place in audio history by designing a amplifier that Paul Bolin said (in the October 2002 Stereophile) "could well justify the creation of a 'Class A+' amplifier category in 'Recommended Components'," and the low distortion characteristics of which prompted editor John Atkinson, a man who has elevated the craft of understatement to a high art, to reach for the word astonishing. That was the Halcro dm58 monoblock ($29,990/pair), which has only recently been superseded by the Halcro dm78.
Michael Fremer Posted: Mar 04, 2001 0 comments
Keith Herron plopped himself down in my listening chair and smiled, clearly pleased with the sound of my system now that his M150 monoblock power amplifiers had been substituted for my Musical Fidelity Nu-Vista 300. He began to tell me why.
Paul Bolin Posted: Mar 21, 2004 Published: Mar 01, 2004 0 comments
For better or for worse, appearances can make a profound first impression. Think of the bold, muscular curves of an Audi TT coupe, the planes and facets of a Lamborghini Murcielago, the sleek lines of a Gulfstream jet. In these vehicles, function and art are combined with smooth facility and perfect aesthetic balance.
J. Gordon Holt Posted: Sep 15, 2015 Published: Dec 01, 1979 0 comments
Imagine if you can a power amplifier with the bass richness, midrange liquidity, and high-end accuracy of the best tube amplifiers, and the inner detail, transient attack, and bass solidity and range of the best solid-state amplifiers. If you can imagine that, you can visualize what this amplifier sounds like.
Thomas J. Norton Posted: May 14, 2016 Published: Apr 01, 1991 0 comments
Michael, who might be termed our typical audiophile (if anything in Santa Fe can be termed "typical"), may have found his digital processor, but he's still in a quandary about choosing the right power amp to drive his new loudspeakers. He has listened to a number of them over the past few months, and has been unable to find one which satisfies him in every way. I suspect he has a lot of company. The thorny problems of room acoustics and placement aside, loudspeakers are easier. Their signatures are pronounced and generate strong feelings one way or another; it's usually no problem to narrow down one's choices in this category.
Robert Deutsch Posted: Aug 04, 1995 0 comments
I remember having a conversation with an audiophile some time ago about the thorny subject of choosing an amplifier. He was convinced, on the basis of an article he had read in Stereo Review, that all amplifiers of a given power rating sound pretty much the same. Although he was sufficiently well off to buy just about anything on the market, he didn't want to waste his money. He chose the amplifier for his system by going through the Audio Annual Directory Issue, calculating the price:watt ratio for each amplifier that was listed, and then bought the amplifier with the lowest price/watt figure that had enough power to drive his speakers. He didn't do any comparative listening and didn't consider buying anything that cost more for the same power, because he knew already that it wouldn't sound any different.