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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Subwoofers & Crossovers
A
JL Audio f212v2: $7000
Blessed with a model designation that has nothing up its sleeve—this is the second version of a Fathom-series powered subwoofer that contains two 12" drive-units—the f212v2 is the second-most-expensive subwoofer made by Miramar, Florida–based JL Audio, exceeded in that regard only by the Gotham v2 ($15,000). The Fathom f212v2, which stands only 32" tall yet weighs 224 lbs, incorporates the company's DARO "cut-only correction" equalizer, each of whose 18 bands is DSP controlled. Its internal class-D amplifier is capable of…
Headphones & Headphone Accessories
Editor's Note:
We strongly recommend those interested in headphone listening visit our sister website, www.InnerFidelity.com, which is edited by Tyll Hertsens.A
Audeze LCD-4: $3995
For their new LCD-4 headphones, Audeze uses a variation on their tried-and-true planar-magnetic technology, with a vanishingly thin diaphragm of aluminized film suspended between a push-pull array of Double Fluxor magnets (flux density: 1.5 teslas) and impedance-matching Fazor waveguides on the outer surfaces of the earcups. The supplied cable…
FM Tuners
A
DaySequerra FM Reference Signature Modification: $3200 (+ 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 midrange. "The new CRT's…
Powerline Accessories
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…
Signal Processors
A
DEQX PreMate D/A preamplifier/equalizer: $4995
In a field where, as KR puts it, "all automatic EQ systems conflate speaker correction with room correction," the DEQX PreMate stands out: In use, this DSP engine begins by measuring and analyzing the speakers—in exclusion of the listening room, to the greatest extent possible—then generates filters to correct frequency response, optimize time alignment, and, if desired, create a customized active crossover for that speaker. After that, the user can, if he or she wishes, completely discard the speakers'…
Miscellaneous Accessories
AI Technology ELGR-8501: $160.75/1 oz
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)
Audio Research Tube Damping Rings: $4 each ★
Damping rings for all AR products are now available to the public at large. They're made of a proprietary polymer material that converts kinetic energy to heat, and…
Interconnects
AcroLink 7N-DA2090 Speciale: $2375/1.5m pair
The less-than-snappily named 7N-DA2090 Speciale is technically laudable; commendably, AcroLink publishes the specs for this product's resistance (18milliohm/meter) and electrostatic capacitance (56pF/meter). It's made of 99.99999% pure multistrand copper, arranged in what AcroLink calls a "balanced twin core structure." According to MF, substituting the AcroLink interconnect for his TARA Zero Evolution "produced sharper but not unnaturally defined transients, shorter sustain and decay, and an overall well-detailed and more…
To those who consider it a magical place, it's no surprise that Paris brings out the best in jazz performers. It's some mysterious elixir between the legendarily appreciative crowds, the food, the wine The Tuileries Garden, and I could go on and on. But whatever the reason, Paris has been the site of more than a few wonderful live jazz recordings few as storied as Wes Montgomery, In Paris, The Definitive ORTF Recording.
It may surprise some that in the supposedly sophisticated world of jazz listeners, bootlegs are a widespread obsession. There are just as many, perhaps even more, jazz…