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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 K50: $15,000
See Jason Victor Serinus's review in this issue. (Vol.44 No.10)

Aurender N10: $8000 with 4TB storage ★
Designed in California and manufactured in South Korea, Aurender's N10 is a computer running a modified version of the open-source Linux operating system, and is dedicated to retrieving audio files from an external NAS drive, or a drive plugged into one of its USB ports, or its internal…

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.

A+

Benchmark Media Systems DAC3 HGC: $2199 ★
Benchmark's DAC3 HGC—the last three letters designate this as the audiophile version, with a…

A

Devialet Phantom I 108 dB: $2990 each (available in 2 finishes) ★
In a setting as idyllic as it was ideal, at least in a commercial sense—the samples were auditioned in an apartment on the rue des Ursulines in Paris, the city of their manufacture—Devialet's top-of-the-line Phantom powered speaker whetted JCA's appetite, and on returning home to his superior-sounding NYC apartment he requested review loaners. There, auditioned with Devialet's Tree stands ($375 each), Dialog dedicated router ($329), and Remote remote volume control ($149), a stereo…

A+

exaSound s88: $6500
See "Digital Processors."

A

exaSound Sigma Streamer: $750
To those who already own an exaSound DAC, the exaSound Sigma Streamer offers an affordable and tidy alternative to the company's PlayPoint digital-source components. The simple Sigma, which streams via wired or wireless LAN, is a Roon-ready endpoint, can function as an HQPlayer network audio adapter, and is compatible with UPnP, OpenHome, and AirPlay protocols. It supports PCM to 32/384, DSD to DSD256, and MQA (full unfold). KR found the Sigma to be…

Editor's Note: Apart from the Bespoke, CAT, and Shindo, all the Class A preamplifiers offer balanced inputs and outputs. And unless noted, the preamplifiers listed do not have phono stages.

A

Audio Research Reference 6SE: $17,000
An updated version of the discontinued Ref 6, with changes in capacitors and wiring, the fully balanced, tubed '6SE impressed JVS, who noted that when he installed the Ref 6SE in his system, his speakers "poured forth some of the most polished, transparent, and arresting sound" he'd heard from his system. Longer-…

Editor's Note: Because of the disparity between typical tube and solid-state "sounds," we have split Class A for separate power amplifiers into two subclasses. Nevertheless, even within each subclass, Class A amplifiers differ sufficiently in character that each will shine in an appropriate system. Careful auditioning with your own loudspeakers is therefore essential. Except where stated, output powers are not the specified powers but rather those we measured into an 8 ohm resistive load. All amplifiers are stereo models, except where designated.

A…

A

ampsandsound Bigger Ben: $4950
This single-input, single-ended, triode-wired, no-negative-feedback tube amplifier drives both loudspeakers and headphones. It offers approximately 8Wpc into 8 ohms and 5Wpc into 32 ohms (when equipped with a solid state rectifier and KT88 output tubes). With 6L6GC output tubes, when it maxes out at 3Wpc, the Bigger Ben powered Zu Soul Supreme speakers "to greater levels of transient and timbral exactitude … than most any other amp I've tried," wrote HR. With DeVore Orangutan O/93s, HR found the Ben every…

Editor's Note: Class A "Loudspeakers" are sufficiently idiosyncratic and differ enough from one another that prospective customers should read Stereophile's original reviews in their entirety for descriptions of the sounds. We have therefore just listed every system or combination that at least one of Stereophile's reviewers feels, as a result of his or her experience, approaches the current state of the art in loudspeaker design. (Note that, to be eligible for inclusion in Class A, the system must be full-range—ie, feature bass extension to 20Hz. It must also be…

A

JL Audio CR-1: $3000 ★
The CR-1 crossover has continuously variable high- and low-pass filters built around two banks of precision Linkwitz-Riley filters that can be set for 12 or 24dB/octave via. Front panel switch. Upon encountering the CR-1, LG "wondered where it had been all [his] life;" he's been using it ever since. "It's beautifully made, sonically transparent, performs a critical role in the optimal setup of subwoofrs, and has ergonomic bypass and mute functions that let you immediately hear the sonic iprovements of good bass management…

A+

ampsandsound Bigger Ben: $4950
See "Integrated Amplifiers."

dCS Bartók: $18,500 w/headphone amp
See "Digital Processors."

HiFiMan Susvara headphones: $6000 ★
The HiFiMan Susvaras are over-the-ear headphones with planar-magnetic drivers, built around gold-coated Nanometer Grade diaphragms—their thinnest ever, the company claims. The drivers also use HiFiMan's Stealth Magnet grids, the individual magnetic strips of which have rounded edges to reduce interference with sound output. The Susvaras weigh 15.9oz and…