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…
Editor's Note: SACD and DVD-A player ratings are based on how they sound with their respective hi-rez media, not CD.
A+
Antipodes DX Reference: $6950–$15,530 ★
What could tempt the frugal JA into forsaking his computer-based file-playing system for a high-quality dedicated music server? The latter must offer sound quality with which the former does not compete—and that's precisely what he found in the Kiwi-built Antipodes DX Reference. The DX Reference, which runs on the Linux operating system,…
Editor's Note: The sound of any particular CD transport/digital processor combination will be dependent on the datalink used-see "Bits is Bits?" by Christopher Dunn and Malcolm Omar Hawksford, Stereophile, March 1996, Vol. 19 No.3 (WWW). Unless mentioned, processors are limited to 32/44.1/48kHz sample rates. To be included in Class A+, a digital processor must be capable of handling DSD or 24/96 LPCM data.
We strongly recommend those interested in using a computer as a true high-end digital audio source visit our sister website www.AudioStream.com, which is…
A+
Merging Technologies NADAC Multichannel-8: $11,500
Among pro-audio companies that have set their sights on the domestic market, the Swiss manufacturer Merging Technologies is noted for its experience with high-resolution networked-audio interfaces. Their NADAC Multichannel-8 (its first name stands for Network Attached Digital to Analogue Converter) is intended for use with network-based file players, and is compatible with the audio-specific Ravenna protocol. Via Ethernet, the Multichannel-8…
Editor's Note: Apart from the CAT, Shindo, and Placette, all the Class A preamplifiers offer balanced inputs and outputs. And unless noted, the preamplifiers listed do not have phono stages.
A
Audio Research REF6: $14,000
Replacing Audio Research's Reference 5 SE of 2011, the Reference 6 is a product in which everything—parts, circuitry, the whole megillah—has been revised, the upgrades including a heftier mains transformer, an improved volume-control circuit, and new custom-made capacitors. The audio circuits include three 6H30 dual…