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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-…

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47 Laboratory Model 4730 Midnight Blue: $1500 $$$
From Japan's reliably unconventional 47 Laboratory comes the Model 4730 Midnight Blue stereo FM tuner, surely the only tuner in current production that allows the user to dial in stations with an actual dial. Its modest size (4.8" W by 3.75" H by 8" D) and attractive dark-blue casework set it apart, as does its use of an old-style rotary variable capacitor—made in a small batch to designer Junji Kimura's order—instead of a crappy digital receiver circuit. According to AD, "Decent-quality broadcasts sounded better…

APC AV S15BLK: $730 w/battery backup ✩
The S15BLK is a comprehensive power source, conditioner, and controller that features extensible external power and isolated EMI/RFI filtration for each of its outlet banks. Voltage regulation is accomplished electronically and without the hysteresis or rebound problems of slower, motor-driven compensation. Protected even the heaviest of KR's loads while also eliminating gray colorations and intermittent chassis vibration. "The S15 made the bridged eVo6 into an even better power amplifier—a super amp." (Vol.28 No.9 WWW…

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BSG qøl Signal Completion Stage: $2395
The qøl Signal Completion Stage is a remote-controlled, solid-state signal processor with four pairs each of RCA and XLR analog inputs and two pairs each of RCA and XLR outputs. With the qøl activated, JA invariably noted a larger overall sound, with a greater impression of the ambience surrounding performers, increased image depth, and better layering within that depth. From JA's measurements, it appeared the qøl process is basically a variant of the well-known Blumlein Shuffler technique. "You must audition the…

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Sound Devices Model 722 portable audio recorder: $2775 ✩
JM raved: "The coolest, most desirable piece of audio hardware I have encountered in a dog's age." The Model 722 is designed as a rugged, high-performance, foolproof, battery-powered portable stereo recorder for electronic newsgathering and video- and film-sound recording. However, with its line-level XLR analog inputs, onboard A/D converters, 40GB hard drive, and headphone amp, the 722 can also serve as a personal stereo. Offers 24-bit recording at up to a 192kHz sample rate. "The apotheosis of…

AI Technology ELGR-8501: $86.47/0.5oz.
AI Technology's ELG-8501 is thermal grease made of more than 80% silver. JM uses a light smear on the mating surfaces of wall-wiring connections to prevent oxidation. He warns: "Never use any kind of silver paste on audio connections such as RCA plugs or amplifier speaker terminals." (Vol.36 No.10 WWW)

Atlantic Technology WA-5030: $399
The WA-5030 wireless audio system comprises the WA-50-t, a transmitter module with USB and two-channel analog inputs; the WA-5030-r, a 30Wpc receiver with two-channel speaker…

Interconnects

Audience Au24 SE: $1190/1m pair
Audience's latest interconnect uses an RCA plug of tellurium-copper alloy with a single, small contact point, meant to reduce the formation of eddy currents. Compared to Audience's Au24 e, the SE version offered superior detail, clarity, timing precision, and image focus, said BD. Au24 e owners can upgrade to SE status for $220. (Vol.36 No.12, Vol.37 No.2 WWW)

Audience Au24: $795/1m pair, unbalanced, $455/additional meter; $1350/1m pair, balanced, $845/additional meter ✩
"The…