Solid State Power Amp Reviews

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Thomas J. Norton Posted: Mar 05, 2005 Published: Oct 05, 1993 0 comments
The Canadian audio industry has been mounting a challenge to other high-end manufacturers over the past few years. Ask any audiophile about Canadian audio manufacturers and chances are that he or she will have no trouble rattling off a string of respected names—Classé, Museatex, Sonic Frontiers, Mirage, PSB, Paradigm, Energy. And Bryston.
Paul Bolin Posted: Feb 20, 2005 0 comments
The "Reference" designation is thrown around a lot in the world of perfectionist audio. It's most often used to elevate the top of the line to a higher perceived status. Occasionally, as in the case of the VTL TL-7.5 line stage that I reviewed in October 2003, it genuinely denominates a component that is clearly superior to its competition in most aspects of performance.
Kalman Rubinson Posted: Nov 21, 2004 0 comments
Non-audiophile friends and relatives raised their eyebrows when they saw the Classé Omega Omicron monoblocks. Not only is the Omicron more expensive than any other amp I've used; at 108 lbs, it's heavier than some of the speakers I've used. The Omicron is Classé's next-to-top-of-the-line amp in its Omega series, but is still definitely a "statement" product. Brian Damkroger reviewed the Omicron's big brother, the Omega Mono, in the July 2003 Stereophile. I refer you to that review for a more detailed description of the Omicron's basic circuitry.
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.
Jonathan Scull Posted: Oct 10, 2004 Published: Jan 01, 1999 0 comments
Without passion man is a mere latent force and possibility, like the flint which awaits the shock of the iron before it can give forth its spark.—Henri-Frédéric Amiel
Paul Bolin Posted: Aug 15, 2004 Published: Aug 01, 2004 0 comments
It's true—you never forget your first love. And no, I'm not talking about little Jackie Lynn Neeck in my second-grade class when I was seven years old. I still remember her, almost as vividly as I remember my first encounter with a fantastic stereo system, and therein hangs a tale.
Paul Bolin Posted: Aug 15, 2004 Published: Aug 01, 2004 0 comments
It's true—you never forget your first love. And no, I'm not talking about little Jackie Lynn Neeck in my second-grade class when I was seven years old. I still remember her, almost as vividly as I remember my first encounter with a fantastic stereo system, and therein hangs a tale.
Paul Bolin Posted: Jul 18, 2004 Published: Jul 01, 2004 0 comments
Consider the plight of solid-state muscle amps. Often derided as brutes lacking sophistication or subtlety, particularly by the SET set (ie, fans of single-ended triodes), these powerhouses are taken for granted and often, like Rodney Dangerfield, they get no respect. And once upon a time, the stereotypes were true. Every veteran audiophile has at some time heard an immensely powerful transistor amp that had the soft sonic allure of a sheet of sandpaper, a lumbering oaf of a component with nothing whatsoever to recommend it save for a bulging set of mighty moose muscles.
Jonathan Scull Posted: Jun 06, 2004 Published: Jun 01, 1999 0 comments
Pass Laboratories' X amplifier series represents the efforts of designer Nelson Pass to prove that simple linear amplifier topologies can be scaled to provide high-quality audio performance at very high power levels. The handsome X1000 monoblock under scrutiny here, the largest and most powerful amp in the Pass stable, makes 1000W into 8 ohms and a mighty 2000W into 4 ohms. The amplifier has no global negative feedback, and only two gain stages: the front-end provides all the voltage gain and feeds a high-current follower stage.
Robert J. Reina Posted: May 02, 2004 Published: Aug 01, 1999 0 comments
The story of New Acoustic Dimensions, aka NAD, begins in the late 1970s. The company was founded as a dealer distribution collective to design and market reasonably priced serious high-end gear to cost-constrained audiophiles. By eliminating needless features and focusing manufacturing in low-cost production facilities, NAD has successfully delivered audiophile-quality gear for 20 years at prices little more expensive than mass-market department-store schlock.
Robert Deutsch Posted: Apr 11, 2004 Published: Dec 01, 2001 0 comments
As technology develops, things get more and more complicated. With every update of Windows, the program offers greater flexibility, but runs slower and makes greater demands on hardware. Automobiles have become so complex that only the most highly trained mechanics are able to fix even a minor malfunction. Surround-sound processors come with inch-thick owner's manuals.
Kalman Rubinson Posted: Mar 28, 2004 Published: Mar 01, 2004 0 comments
For me, the iconic Adcom power amplifier was the GFA-555. As an aspiring audiophile, I was deeply impressed with Tony Cordesman's review in Stereophile in 1985 (Vol.8 No.4). That did it! After years of kit-building and doing it myself, the '555 was the first factory-built amp that I wanted and could afford. Over the years, I changed speakers several times, and even added a fully regulated power supply to the '555, but it never balked. At the end of its tenure at my house, it had been demoted to my third-string backup; today it's making someone else tap his toes.
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.
Michael Fremer Posted: Mar 21, 2004 Published: Mar 01, 2004 0 comments
Monoblock power amplifiers seem to be moving in and out of my listening room faster than green-onion salsa from Chi-Chi's. Over the past six months I've had the Parasound Halo JC-1, the Halcro dm68, the Pass XA-160, the Musical Fidelity kW, and now these 300W (into 8 ohms), $4500-each beauties from Theta Digital. All of these amps sounded as different as they looked, which was no surprise; too bad the "measures the same, sounds the same" dogmatists remain open for business.
Michael Fremer Posted: Feb 01, 2004 Published: Jan 01, 2004 0 comments
Thoughts of power, domination, and audio road-rage enter one's mind when contemplating Musical Fidelity's SUV-like, limited-edition, 20th-anniversary offerings (footnote 1). (Only 75 sets of kWPs and kWs will be made.) The gleaming, brushed-aluminum, two-box, oversized, overweight Tri-Vista kWP preamp is fortress-like—the "kWP" looks as if chiseled into the faceplate by grimy, sweaty hands. Each of its boxes weighs almost 56 lbs. The unit's milled-aluminum remote control, the size of a Volkswagen Microbus and looking like something Fred Flintstone might wield, must weigh over 5 lbs. The kWP outputs more juice than many power amps: 55V, with 20 amps of peak-peak instantaneous current!

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