Featured on this issue's cover is Audio Research's awesome Reference 160M monoblock power amplifier, reviewed inside by Jason Victor Serinus. John Atkinson reviews the Australian Centaur II 500 amplifier; Herb Reichert, Legacy's Studio HD monitor; Michael Fremer, Sonus Faber's flagship Aida speaker; Kal Rubinson, Paradigm's hi-tech Persona 5F speaker; and Ken…

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Even if you've never heard of these men, there's definitely something here for everyone. Universal in its appeal is Philip…
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Ludovic Morlot, Seattle Symphony Orchestra; Roomful of Teeth
Seattle Symphony Media SSM 1018 (CD, 2.0- and 5.1-channel downloads at 24/96). 2018. Rosalie Contreras, Elena Dubinets, exec. prods.; Dmitriy Lipay, prod., eng.; Alexander Lipay, eng. DDD. TT: 58:20
Performance ****½
Sonics *****
What ties Luciano Berio's boundary-breaking Sinfonia for Eight Voices and Orchestra (1968–69) to Pierre Boulez's out-there Notations I–IV for Orchestra (1945/1978) to Maurice Ravel's progressively off-kilter La Valse (1906–1920)?…
Streaming music isn't new. US companies have been doing it since the 1920s, when it was discovered that multiplexing—the then-new practice of combining multiple signals over a single conductor—could be used to send live or recorded music over public power lines. The first of those companies was Muzak LLC.
File that away.
In the middle-class world in which I was raised, my family had a tidy little house, plenty of food, clean clothes, and excellent medical care. My sister and I…
Michael Fremer visited Siegfried last June and wrote about the visit in the September issue of Stereophile: "Linkwitz had a 'straight job' outside of audio, working for Hewlett-Packard. Audio was his passion. He made many significant innovations in addition to the Linkwitz-Riley crossover, including complete designs for the innovative open…
Indiana University (Bloomington) has one of the most outstanding music schools in the world, and that is…
Each listing-in alphabetical order within classes-is followed by a brief description of the product's sonic characteristics and a code indicating the Stereophile Volume and Issue in which that product's report appeared. Thus the May 2017 issue is indicated as "Vol.40 No.5."
Some products listed have not yet been reported on; these are…
The classes each cover a wide range of performance. Carefully read our descriptions here, the original reviews, and (heaven forbid) reviews in other magazines to put together a short list of components to choose from. Evaluate your room, your source material and front-end(s), your speakers, and your tastes. With luck, you may come up with a selection to audition at your favorite dealer(s). "Recommended Components" will not tell you what to buy any more than Consumer Reports would presume to tell you whom to marry!
Class A
Best attainable sound…
A+
TechDAS Air Force One: $105,000 plus tonearm ★
"A visually stunning technological tour de force," the 174-lb Air Force One has a three-layer chassis of damped aluminum, a forge-processed stainless-steel platter, and a massive AC synchronous motor controlled by an outboard dual-50W amplifier. The platter uses an air bearing; LPs are held to the platter with vacuum suction. The review sample was equipped with a Graham Engineering Phantom II Supreme tonearm. Though it didn't sound as smooth as the Continuum Caliburn or the Onedof One Degree of Freedom, the Air…