Solid State Power Amp Reviews

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Michael Fremer Posted: Jun 23, 2009 0 comments
Musical Fidelity's founder, Antony Michaelson, arrived at my house to help me set up the two chassis of his sleek, limited-edition, $30,000 Titan power amplifier. (The task requires at least two people.) A week later, a representative of Musical Fidelity's US importer, KEF America, dropped by to listen and to deliver three of Musical Fidelity's new V-series products: a phono preamp, a DAC, and a headphone amp. All three fit comfortably into a small paper bag; the price of the three was $700.
Kalman Rubinson Posted: May 29, 2009 0 comments
The first time I ever heard stereo sound, it was in a shop on Manhattan's Radio Row. In addition to the Studer staggered-head tape deck, the system consisted of pairs of McIntosh C8 preamps, MC60 power amps, and monster Bozak B-310 speakers. I can still picture the room and almost hear the sound. I was then an impecunious high-schooler, and while I always strived to buy the best equipment I could afford, I unfortunately was never able to own any of these iconic products. However, when I saw McIntosh's new MC303 three-channel power amp glowing brightly on silent display at the 2008 CEDIA Expo, a light bulb went on over my head: I'd been assessing a series of three-channel and monoblock amps, and the MC303 would fit nicely into my New York City system.
John Atkinson Posted: May 26, 2009 0 comments
When I reviewed the Moon Evolution P-7 preamplifier ($6900) from Canadian manufacturer Simaudio in March 2009, I was impressed by the qualities of both the audio engineering and the sound. It was a no-brainer, therefore, to follow that report with a review of the matching power amplifier, the Moon Evolution W-7. In March 2006 Kalman Rubinson reviewed Simaudio's Moon Evolution W-8, which offered at least 250Wpc into 8 ohms (I measured 310Wpc at clipping). The W-7 looks identical to the W-8, but is 10 lbs lighter, offers 150Wpc into 8 ohms, and retails for $8900 compared with the W-8's $13,500.
Brian Damkroger Posted: May 26, 2009 0 comments
Over the course of his 30-plus years in high-end audio, Nelson Pass's designs have never been far from the leading edge. In his first Threshold amplifiers he pioneered the use of dynamically adjusting bias and cascode circuitry; then, in the later Stasis models, he switched gears to the simpler approach of pure class-A. All were innovative designs, and among the very best-sounding amps of their time, but were just warmups for what was to come. In 1991, Pass Labs introduced the Aleph 0, a class-A amplifier that was a startling departure from conventional solid-state designs and combined design elements generally thought mutually exclusive: transistors, single-ended operation, and the ability to output 75Wpc into an 8-ohm load. Not surprisingly, the Aleph 0 sounded like nothing else, and became the basis for the widely acclaimed series of Pass Labs amplifiers that evolved over the next decade.
Larry Greenhill Posted: May 08, 2009 Published: Jan 08, 1996 0 comments
The No.331 is the latest iteration in a series of Mark Levinson 100Wpc, solid-state, stereo power amplifiers. Extensive cosmetic alterations, internal structural changes, and new circuit designs make it quite different from the No.27 and No.27.5 models that preceded it. These design refinements emanate from Madrigal Audio Laboratories' latest flagship amplifier, the $32,000/pair, 300W RMS Mark Levinson No.33 Reference.
Jonathan Scull Posted: May 04, 2009 Published: Apr 04, 1995 0 comments
What is it about a component that makes the blasé High Ender sit up and say, "Hey, this is special!"? What elements of its reproduction reach out to you and won't let go? How does the intrepid audio reviewer find a way to describe these hopefully recurring moments of musical discovery which define the high-end experience? How many times, after all, can you say, "Ooooo, ahhhhh, that's the best [insert some part of the frequency range here]," ad nauseam? How much difference is there, anyway? Therein lies the tale...
Kalman Rubinson Posted: Mar 30, 2009 Published: Mar 01, 2009 0 comments
I've been enthusiastically tracking the development of Bel Canto's class-D amplifiers, from their original TriPath-based models to their more recent designs based on Bang & Olufsen's ICEpower modules. With each step, Bel Canto has improved their amps' sound quality and reliability.
Michael Fremer Posted: Mar 20, 2009 0 comments
High-tech, compact, and lightweight, Chord's entry-level SPM 650 power amplifier ($4995) promises robust power output, low distortion and noise, flat and ultra-wideband frequency response, and bulletproof reliability—all in what seems an impossibly small package measuring 16.4" wide by 3.4" high by 13.8" deep and weighing only 22 lbs.
John Atkinson Posted: Dec 15, 2008 0 comments
Musical Fidelity's "Supercharger" concept is simple, which is perhaps why no one had thought of it before: If you love the sound of your low-powered amplifier but your speakers are insensitive, or you just need more loudness, you insert the high-power Supercharger amplifier between your low-powered amp and speakers. The Supercharger loads the small amplifier with an easy-to-drive 50 ohms, and, in theory, has so little sonic signature itself that it passes on the sonic signature of the small amp unchanged, but louder.
Larry Greenhill Posted: Dec 03, 2008 Published: Mar 03, 2000 0 comments
In his 20,000 Leagues Under the Sea, Jules Verne presents the enigmatic Captain Nemo, commander of the great submarine Nautilus, as powerful, charismatic, and mysterious. On first meeting Nemo, the narrator, M. Aronnax, notes, "I made out his prevailing qualities directly: self-confidence—because his head was well set on his shoulders, and his black eyes looked around with cold assurance; calmness—for his skin, rather pale, showed his coolness of blood; energy—evinced by the rapid contraction of his lofty brows; and courage—because his deep breathing denoted great power of lungs." All in all, "this man was certainly the most admirable specimen I had ever met."
Michael Fremer Posted: Nov 17, 2008 0 comments
Founded in 1925, Luxman has long been one of Japan's most highly regarded audio manufacturers. Throughout the 1970s and into the 1980s, Luxman's tube preamplifiers and power amplifiers occupied the top shelves of high-performance audio retailers, and to many older American audiophiles, the Luxman name is as familiar and esteemed as those of such storied American brands as McIntosh and Marantz. Luxman's combination of rich, warm sound, superb build quality, and indelible industrial design made its products fully competitive with other brands then considered among the world's best.
Dick Olsher Posted: Oct 03, 2008 Published: Aug 03, 1986 0 comments
Yet another amp from Colorado! This is the third amp to come my way from that state (the others being the Spectrascan and the Rowland Research), and at this point, after living with it for a couple of months, I'm quite comfortable in declaring the Boulder 500 to be one helluvan amp.
John Atkinson Posted: May 17, 2008 Published: Jul 17, 1989 0 comments
This review should have appeared more than a few months ago. When I reviewed Linn's Troika cartridge back in the Fall of 1987, in Vol.10 No.6, Audiophile Systems also supplied me with a sample of the Linn LK1 preamplifier and the LK2 power amplifier, which I had intended to review in the due course of things. As it transpired, however, I was less than impressed with the LK2, finding, as did Alvin Gold back in Vol.9 No.2, that while it had a somewhat laid-back balance, it also suffered a pervasive "gray" coloration, which dried out recorded ambience and obscured fine detail.
Michael Fremer Posted: May 16, 2008 0 comments
Some of the old audio names, such as Eico and Pilot, are gone. Others—Fisher, AR, KLH, H.H. Scott, etc.—have been rendered meaningless by corporate mergers and acquisitions. Yet more than 50 years after their founding, McIntosh and Marantz, arguably the two most prestigious names in American high-quality audio electronics, survive. The products they make today are probably closer in spirit to their original classics of half a century ago than at any time since the early 1970s.
Posted: May 09, 2008 Published: Dec 09, 1992 0 comments
Crown?

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