Solid State Power Amp Reviews

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."

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."

A recent (unpublished) letter to the editor argued that the reference for audio perfection is the sound of real instruments in a real space.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."

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.

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!"

Once upon a time, in the early days of class-D amplification, the very notion that the ELAC (ELectroACoustic) Alchemy DPA-2 Stereo/Mono Power Amplifier ($1495 each) uses a class-D output stage would cause some readers to turn the page (footnote 1). But as class-D amplifiers established their pedigree as bona fide hi-fi components, audiophiles have begun to embrace the notion of a lightweight, cool-running amplifier that will not dramatically increase the electric bill and that, when properly executed, can be quite musical.

The finest soup I ever tasted was served in Kamakura City, Japan, in 1992. After climbing a mountain to a shrine that held a lock of Buddha's hair, I descended to Kamakura and walked to its Great Bronze Buddha. By the time I had taken my fill of the image's 730-year-old wonders and the countless picture-taking tourists at its base—a mild precursor to "the world is a backdrop for my ego" snappers of the smartphone age—I noticed that my stomach was growling.

Exhausted, I walked back into town and descended stairs into a conveniently located corner restaurant. I had to eat fast because my train back was departing soon. Looking for something quick, I ordered miso soup and eel over rice. Imagine my surprise when I found myself gazing into the most wondrous bowl of soup I'd ever seen. Floating on top of its clear, brown broth were various vegetables and herbs, each perfectly positioned in relationship to the other, as in a handcrafted textile. I felt as though I'd been granted private access to a great work of art.

What does this have to do with the Electrocompaniet AW 800 M Reference power amplifier ($22,500/each) that is the subject of this review? You'll have to read on to find out.