We strongly recommend those interested in using a computer as a true high-end digital audio source visit our new sister website, www.AudioStream.com, which…
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Digital Processors
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.
Music Surround-Sound Components (other than speakers and disc players)
The latest enhancement of the Statement D2 audio/video processor is the Anthem Room Correction kit (ARC), which includes a calibration microphone and stand and all necessary software and cables. Its versatile controls allow the user to modify the recommended crossovers, insert a variable room-gain bump, and set the upper-frequency limit for corrections. With the ARC's settings in place, soundstages were wider and more open. "Using the optimized ARC…
Class A
Anthem Statement D2v 3D: $9499 ✩
The latest enhancement of the Statement D2 audio/video processor is the Anthem Room Correction kit (ARC), which includes a calibration microphone and stand and all necessary software and cables. Its versatile controls allow the user to modify the recommended crossovers, insert a variable room-gain bump, and set the upper-frequency limit for corrections. With the ARC's settings in place, soundstages were wider and more open. "Using the optimized ARC…
Two-Channel Preamplifiers
Aesthetix Saturn Calypso: $4999 ✩
A beautifully built, smartly designed, crisply functioning, versatile, and sonically brilliant preamplifier," the Saturn Calypso is a single-box, tubed unit that borrows technology from the more expensive, two-box Jupiter Callisto to…
Editor's Note: Apart from the AudioValve, CAT, Fi, Shindo, and Placette, all the Class A preamplifiers offer balanced inputs and outputs. And unless noted, the preamplifiers listed do not have phono stages.
Class A
Aesthetix Saturn Calypso Signature: $6999
Aesthetix Saturn Calypso: $4999 ✩
A beautifully built, smartly designed, crisply functioning, versatile, and sonically brilliant preamplifier," the Saturn Calypso is a single-box, tubed unit that borrows technology from the more expensive, two-box Jupiter Callisto to…
Two-Channel Power Amplifiers
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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Integrated Amplifiers & Receivers
Made in South Korea and imported by Hammertone Audio, the 12.5Wpc T-1500 boasts exquisite industrial design: polycarbonate chimneys showcase, protect, and ventilate the tubes, while attractively molded handles make for easy lifting. It uses two PCL86 driver tubes, two choke-regulated 300Bs with user-adjustable fixed bias, and output transformers wound around a nickel-permalloy core. Though it lacked bottom-end extension, the T-1500 delivered harmonic richness, excellent transparency, and…
Class A
Allnic T-1500 300B: $6900
Made in South Korea and imported by Hammertone Audio, the 12.5Wpc T-1500 boasts exquisite industrial design: polycarbonate chimneys showcase, protect, and ventilate the tubes, while attractively molded handles make for easy lifting. It uses two PCL86 driver tubes, two choke-regulated 300Bs with user-adjustable fixed bias, and output transformers wound around a nickel-permalloy core. Though it lacked bottom-end extension, the T-1500 delivered harmonic richness, excellent transparency, and…
Loudspeaker Systems
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…
Subwoofers
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…
Class A
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…
Headphones & Headphone Accessories
Price includes Voltikus PSU. See Digital Processors. (Vol. 34 No.10 Read Review Online) Benchmark Media Systems DAC1: $995 $$$ ✩
Benchmark Media Systems DAC1 USB: $1195 ✩
Benchmark DAC1 HDR: $1595
Two headphone jacks but only digital inputs rather than analog. See "Digital Processors." (…
Editor’s Note: We strongly recommend those interested in headphone listening visit our new sister website, www.InnerFidelity.com, which is edited by Tyll Hertsens.
Class A
Antelope Zodiac Bundle: $4495
Price includes Voltikus PSU. See Digital Processors. (Vol. 34 No.10 Read Review Online) Benchmark Media Systems DAC1: $995 $$$ ✩
Benchmark Media Systems DAC1 USB: $1195 ✩
Benchmark DAC1 HDR: $1595
Two headphone jacks but only digital inputs rather than analog. See "Digital Processors." (…
FM Tuners
David Day's Signature Mod effectively addresses this ultimate FM tuner's cathode-ray tube's tendency to burn out. Switching circuitry has been added to allow the CRT to turn off when not needed. The Signature Mod also replaces the tuner's incandescent bulbs with longer-lasting LEDs, and uses hand-matched, low-group-delay filters for lower distortion and better channel separation. LG noted punchy, quick bass response, a deeper soundstage, and a more transparent…
Class A
DaySequerra FM Reference Signature Modification: $2800 (+ cost of tuner) ✩
David Day's Signature Mod effectively addresses this ultimate FM tuner's cathode-ray tube's tendency to burn out. Switching circuitry has been added to allow the CRT to turn off when not needed. The Signature Mod also replaces the tuner's incandescent bulbs with longer-lasting LEDs, and uses hand-matched, low-group-delay filters for lower distortion and better channel separation. LG noted punchy, quick bass response, a deeper soundstage, and a more transparent…
Powerline Accessories
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…
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…