Solid State Power Amp Reviews

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J. Gordon Holt  |  Jul 09, 2019  |  First Published: Sep 01, 1966  |  4 comments
One by one, the major amplifier manufacturers have acceded to the pressures of the marketplace and introduced "solid-state" models, whether or not these happened to sound as good as their previous tube-type units. Dynaco was one of the last of the hold outs, preferring, according to their advertisements, to wait until they could produce a solid-state unit that was at least as good as their best tube types. Now, they've taken the plunge at last, with their Stereo 120.
Michael Fremer  |  Jun 25, 2019  |  43 comments
CH Precision's massive, versatile, technologically sophisticated, 165 lb M1.1 power amplifier ($54,000 configured for stereo) can easily crush your foot if you're not careful when installing it. But the more important consideration is this: Can this cool gray techno-square sing and dance without stepping on its own feet?
Kalman Rubinson  |  May 02, 2019  |  14 comments
Sometime near the turn of this century, I wandered into a demo room at a Consumer Electronics Show and discovered, in the exhibit of a company I'd never heard of, an integrated amplifier that sounded clean and refreshing. It was the only product Hegel Music Systems displayed at that CES, and I don't recall its name or the associated equipment, but I've always remembered that model's striking appearance and impressive sound quality.
Jason Victor Serinus  |  Apr 25, 2019  |  70 comments
I first encountered Verity Audio's Monsalvat Amp-60 stereo power amplifier ($58,000) in October 2017, in one of the largest single-system rooms at the Rocky Mountain Audio Fest. After hearing the Amp-60 and Verity's Monsalvat Pre-2 preamplifier drive Verity's Lohengrin IIS loudspeakers ($133,000/pair), I enthused about the "most impressive range of colors and supreme sense of spaciousness" that contributed to the system's "absolutely beguiling" sound.
Sasha Matson  |  Apr 19, 2019  |  20 comments
It hit me not long ago: I need more Mac in my life! I promptly purchased the current production version of McIntosh Laboratory's time-honored MC275 tubed amplifier, to mate to the Mac C2300 tubed preamplifier I already owned. The recently reinvigorated debate in these pages comparing solid-state and single-ended tube designs got me to thinking. One thing led to another, and voilà! McIntosh's latest solid-state stereo amplifier, the MC462 Quad Balanced ($9000), arrived, bolted to a shipping pallet and encased in two big, heavy, nested boxes. All that packaging weighs 33 lb—the amp inside weighs 115 lb. If you want to lift it onto a rack, you'll need two people, a serious handcart, and a strong, deep shelf.
Robert Harley, J. Gordon Holt  |  Apr 09, 2019  |  First Published: Jan 01, 1990  |  6 comments
In 1988, Bob Carver set out to design the best amplifier he possibly could, without regard for cost. It was more of an ego exercise than an attempt to build a product with wide commercial appeal. The result was the four-chassis, $17,500 Silver Seven.

Interestingly, Bob Carver chose vacuum tubes to realize his dream of building the ultimate power amplifier. The Silver Seven uses fourteen KT88 output tubes per channel, and puts out 375W into 8 ohms. Bob built three pairs of Silver Sevens, not expecting to sell many at the $17,500 asking price. When those sold quickly, another 10 pairs were manufactured. Now, demand is so great that Silver Sevens are built in groups of 30 pairs.

Herb Reichert  |  Jan 22, 2019  |  7 comments
I am obliged to begin this review of First Watt's new stereo power amplifier, the SIT-3, with an explanation of how I believe a power amplifier should be reviewed. Why? Because the 18Wpc SIT-3 is a unique and historically important design that can't be wired up to just any loudspeaker and then critiqued on the basis of its bass power, treble brightness, or midrange acuity.
Larry Greenhill  |  Nov 08, 2018  |  First Published: Aug 01, 1986  |  4 comments
Japanese audiophiles venerate American high-end audio components, paying huge sums for vintage Marantz tube amplifiers, racks of Levinson ML-2s, and early Audio Research tube preamplifiers. The balance of trade, at the high end anyway, hasn't been reciprocated: Japanese high-end amplifiers and preamplifiers have not received as positive a reception in the US. Perhaps it was a matter of styling, but the sonics of the Sony Esprit line and the class-A Stax amplifiers did not receive the following they might have, had the products been American.
John Atkinson  |  Sep 25, 2018  |  34 comments
I am finding hard to grasp that it is almost 50 years since I first went to a hi-fi show. That show, held at London's Olympia exhibition center, was notable both for Yamaha's launch of a loudspeaker with a speaker diaphragm shaped like a human ear, and for being the first time I saw the drop-dead gorgeous Transcriptors Hydraulic Reference turntable, which was later featured in the film A Clockwork Orange. The most recent show I attended was AXPONA, held last April in the Chicago suburb of Schaumburg. There I saw no ear-shaped drive-units, but the final room I visited featured sound that the 1969 me could have only fantasized about.
Ken Micallef  |  Aug 23, 2018  |  31 comments
Designed in New York City, manufactured in Poland, and barely bigger than a thick paperback, the Brooklyn Amp ($2495) is Mytek's first power amplifier. Like all of their products, it's sleek to behold, with a powerful look that suggests the company's pedigree: in addition to high-end consumer electronics, Mytek makes gear for the pro-audio market, where exceptional build quality and space-saving design are the norm.

Consistent with that last characteristic is the Brooklyn Amp's output architecture: it operates in class-D, a technology that remains controversial.

Robert Deutsch  |  Aug 02, 2018  |  First Published: Apr 01, 1995  |  1 comments
Founded by Nelson Pass in 1974, Threshold is one of those companies audiophiles tend to take for granted. Best known for the much-imitated Stasis (sliding bias) amplifier designs, Threshold became one of the industry leaders during the early 1980s. Since then, they've been upstaged somewhat by such rivals as Krell and Mark Levinson, and the public's impression of the company's stability wasn't helped by the departure of several of its principals, including Nelson Pass.
Michael Fremer  |  Jul 26, 2018  |  51 comments
Not everyone needs a power amplifier that can deliver 888W RMS into 8 ohms or 1776W into 4 ohms. You could say that no one needs one of these—or two, if you want to listen in stereo. Most household AC systems can't even provide enough current to deliver all that power. But Simaudio does build Moon 888 monoblocks, and people do buy them, whether or not they need an amp that weighs about 250 lb each and costs $118,888/pair.
Jason Victor Serinus  |  Jul 24, 2018  |  42 comments
It was almost seven years ago that Nelson Pass, whose talks and exhibits I'd covered at many a Bay Area Burning Amp DIY event and audio show, surprised me with a loan of two Pass Laboratories' XA 160.5 class-A monoblock amplifiers. Ten months later, after I'd commented that my system had challenged the XA 160.5s in the bass department, he sent me a pair of XA200.5 monos. I connected those bigger babies to Wilson Audio Sophia 3 loudspeakers and some now-discontinued digital components with Nordost Odin 1 interconnects and speaker cables. Then came my way, toward the end of 2016, the XA200.8 monoblocks ($42,000/pair).

Robert Deutsch  |  Jul 05, 2018  |  First Published: May 01, 1995  |  4 comments
When it comes to amplifiers, ya gotcher tubes, yer solid-states, and yer hybrids. Although amplifier manufacturers would have you believe otherwise, the majority of designs within each category are variations on a few fairly-well-known themes. Everyone agrees that the power supply is extremely important. Most designers try to obtain the amplifier's desired frequency response and distortion characteristics with a minimum of negative feedback. It's also agreed—at least among designers of solid-state amps—that the ability to drive a variety of speakers, including those that present a low-impedance and/or reactive load, is an important priority.
Jason Victor Serinus  |  Jun 21, 2018  |  39 comments
On the second morning of a recent audio show, I walked into the exhibit room of Bricasti Design.

"How about some Mahler?" asked cofounder and designer Brian Zolner.

"Oh God. Not at 10am!"

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