Dan D'Agostino Momentum M400 MxV monoblock power amplifier
The Momentum M400 MxV Mono amplifier ($79,500/pair) is the latest iteration of Dan D'Agostino Master Audio Systems' debut amplifier of 2011, the Momentum Mono amplifier. Weighing 95lb, it is smaller and lighter than its entry-level sibling, the more powerful, 125lb Progression M550 Mono amplifier ($47,500/pair), and is veritably dwarfed by some other monoblocks, including the flagship D'Agostino Relentless Epic 1600 (570lb) and the Karan Acoustics POWERa mono (231lb), which I reviewed in May 2023. But if the M400 MxV's rock-solid look and feel and its exquisite aestheticsa sleek amalgam of silver and copper fronted by a power meter that glows green and radiates Rolex qualityare any indication, a helluva lot is going on beneath its showy exterior.
Dan D'Agostino Momentum monoblock power amplifier
What better way to celebrate the expiration of a noncompetition clause than to debut a product that has no competition? That's what Dan D'Agostino appears to have done with his Momentum monoblock amplifier ($55,000/pair)his first new product since leaving Krell, the company he cofounded more than 30 years ago.
Dan D'Agostino Progression Mono monoblock power amplifier
For as long as I've known about high-end audio, I've put Dan D'Agostino, co-founder of Krell, on the same pedestal reserved for the likes of Frank McIntosh, Saul Marantz, Avery Fisher, H.H. Scott, and Sidney Harman. The reason is simple: Dan's the man whose achievements at Krell led me from the harsh sound of my first high-end amp into another dimension, one of truly musical sound reproduction.
darTZeel NHB-108 Model One power amplifier
It was late May 2002 and I was about to leave the Free Republic of Bay Ridge, Brooklyn, for the high-class hallways of the New York Hilton and Home Entertainment 2002, so I could file daily reports for www.stereophile.com. As he was giving me last-minute instructions, webmaster Jon Iverson said, "I don't know whether or not you followed Hervé Delétraz's articles">http://www.stereophile.com/news/10825">articles on building his amplifier, but he's going to have a sample at the Show. You should drop in and check it out. It sounds kind of interesting."
darTZeel NHB-108 model two power amplifier
Like the proverbial pot of gold, darTZeel's golden equipment beckons. That, at least, is how it felt in January 2010, when John Atkinson and I ended our coverage of T.H.E. Show Las Vegas in the room shared by darTZeel, Evolution Acoustics, and Playback Designs. Listening to darTZeel's discontinued NHB-458 monoblocks (footnote 1) and NHB-18NS reference preamplifier (now updated), I was transfixed by the fullness of the system's midrange and overall beauty of the sound. "It was as though the system was opening its heart and welcoming us in," I wrote. "That's how warm and nurturing the sound was."
darTZeel NHB-458 monoblock amplifier
A recent (unpublished) letter to the editor argued that the reference for audio perfection is the sound of real instruments in a real space. The writer claimed that, since the art and/or science of audio is advancing, and because it is a "scientific truth" that the closer you get to perfection, the less divergence there is components, that therefore there should be less difference in sound among the components listed in Class A of Stereophile's "Recommended Components" than among those in Class B, much less Class C. This should be true of loudspeakers, he said, but even more true of top-rated amplifiers, since "they inherently have less divergence."
darTZeel NHB-468 monoblock power amplifier
What's the point of reviewing a pair of monoblock amplifiers that costs more than most people spend on two or even several cars and far more than most audiophiles spend on an entire music system? That's a good question. Another is: Why should I write this review when, just seven years ago, I reviewed a pair of darTZeel monoblocks that look exactly like this new pair?
I realize that products such as the darTZeel NHB-468 ($170,000/pair) are for the very few, but the very few include far more people throughout the world than you may realize people who can afford such costly audio products and who do buy them. I know, because in my travels I've met a lot of them, and they deserve to read reviews of products they're considering buyingthings most of us can only dream of owning.
Dynaco Stereo 120 transistor power amplifier
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.
EAR/Yoshino M100A monoblock power amplifier
When I first laid eyes on the Paravicini M100A monoblock power amplifiers at the Consumer Electronics Show in January 2001, an audiophile in the room squinted at my badge and cried out, "Hey, J-10, these amps have your name written all over 'em!"
Edge NL-12 power amplifier
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.