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Audeze LCD-4 headphones: $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…

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C. Crane FM Reflect Antenna: $34.95
The C. Crane FM Reflect Antenna is a thick T-run of twin copper wires terminated by a 75 ohm connector. ST arranged it discreetly behind a closed window curtain, and used it to pull in all of his favorite HD Radio stations, including those his Sony XDR-F1HD tuner couldn't otherwise retrieve. "This is, by far, the best indoor FM antenna I have used, with or without HD Radio, and I am buying two more," he said. (Vol.32 No.4)

DaySequerra FM Reference Signature Modification: $3200 (+ cost of tuner) ★
David Day's…

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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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'…

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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)

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…

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…

The partnership between Bob Stuart of MQA, Sawaguchi, and Seiji Murai of Synthax Japan and UNAMAS began after they met last fall at Stuart's MQA presentation for the Japan Audio Society. As soon as Sawaguchi and Murai realized that MQA was compatible with CD encoding at 16/…

So you own 200gm LP pressings? And test pressings? Even Mobile Fidelity's One-Step 45rpm Santana Abraxas? Vinyl fans, Devialet has now gone one better. The French amplifier and wireless speaker manufacturer is now in the record business, and releasing limited-edition, 180gm vinyl LPs of unreleased live concerts of jazz greats like Oscar Peterson, Bill Evans. and now, Sarah Vaughan. But Devialet is also making and selling lacquer copies that are limited to editions…

While the term is admittedly overly broad and in the end could indeed mean just about anything…