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Editor's Note: We strongly recommend those interested in LP playback visit our sister website, www.AnalogPlanet.com, which is edited by Michael Fremer.

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Continuum Audio Labs Caliburn: $200,000 with tonearm and stand ✩
"Part New Jersey diner, part Wurlitzer jukebox," the 160-lb Caliburn is the brainchild of Mark Doehmann, whose clever, purposeful design is based on rigorous scientific methodology using finite-element analysis computer programs. While the only serious competition for the Caliburn is the Rockport System III Sirius, MF decided, "The…

Editor's Note: SACD, DVD-A, and media player ratings are based on how they sound with their respective hi-rez media, not CD.

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Bryston BDP-2: $2995
Essentially a beefed-up BDP-1, the BDP-2 replaces the original's 0.5GHz processor with a 1.6GHz Intel Atom N450 and upgrades its single-amp linear power supply with a larger toroidal transformer specced to provide 10 amps of peak current. In addition, the BDP-2 has two Ethernet connectors (instead of the BDP-1's one), six USB ports (instead of four), a new eSATA connector, and…

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 edited by…

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Bryston SP-3: $9500
The SP-3 combines a true analog preamp and a full-featured multichannel digital audio processor in a beautifully built, relatively compact (17" W by 5.75" H by 14.25" D) case. It uses Bryston's high-quality 24-bit/192kHz DACs and offers a full suite of connections, including: eight HDMI inputs, two HDMI outputs, a 7.1 set of analog inputs and two 7.1 sets of outputs, four S/PDIF inputs, two AES/EBU inputs, and USB, RS-232, and Ethernet jacks. The sound from the SP-3's analog stereo inputs was "absolutely pristine,…

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

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Audio Research Reference 5SE: $13,000
The Ref 5 SE is a tubed, remote-controlled line preamp with six sets of balanced and unbalanced inputs, three sets of balanced and unbalanced outputs, and a unity-gain Processor input. It uses 6550C and 6H30P tubes for power-supply regulation, and four 6H30P dual-triodes in the analog stage. Improvements over…

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.

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Audio Research VSi60: $5000 ✩
In the 50Wpc VSi60, a passive line stage is combined with a JFET input stage driving one 6H30 driver tube per channel. Each channel's output stage has a matched pair of Svetlana 6550C push-pull tubes with a combination of pentode operation and ARC's "partially cathode-coupled topology." Convenient to use, the VSi60 provides output taps at 4 and 8 ohms, as well as four pairs of voltmeter test points. Though it lacked the ultimate control of more powerful amplifiers, the VSi60 combined a glorious midrange…

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. I 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…

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B&W DB1: $4500
The DB1 is a powered subwoofer in a handsome sealed enclosure measuring 19.3" H by 18.1" W by 16.2" D and weighing 97 lbs. Its solid construction includes: two mechanically opposed 12" woofers separated by a partially open internal partition, 1"-thick walls of MDF with 3/4"-thick bracing panels to minimize vibrations, digital signal-processing circuits to run its menu-based control system, home automation capability, and a 1000W switching amplifier equalized to produce linear output. Also included are a calibration microphone…

Editor's Note: We strongly recommend those interested in headphone listening visit our sister website, www.InnerFidelity.com, which is edited by Tyll Hertsens.

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Antelope Zodiac Gold: $3595
Voltikus PSU adds $995 when purchased separately. Bundle price is $4495. See Digital Processors. (Vol.34 No.10 WWW)

Audeze LCD-X: $1699
These large, luxurious, circumaural headphones have planar-magnetic drive-units with a thin-film diaphragm energized by arrays of powerful neodymium magnets on both sides. They employ Audeze-…