A key feature of the Diamond USB, which is held in the photo by Audioquest’s Andrew Kissinger, is the Audioquest DBS (dielectric bias system). Invented and patented by Richard Vandersteen, with the cable version co-patented by Vandersteen and Audioquest’s Bill Low, the DBS creates an electrostatic field that saturates and polarizes the molecules of the insulation to minimize energy storage in the dielectric. The result is claimed to be much greater dynamic range, lower background noise, and reduced phase distortion.

Steve Silberman, VP of Marketing, explained that all insulators have capacitance. Energy from the conductor enters the insulation and needs to discharge. The DBS’ electrostatic field lowers the discharge, which in turn lowers the amount of phase distortion and makes for a cleaner signal.

In a very short demo, Silberman compared music through a stock USB cable that came with his printer to music through the Diamond. Using the new Arcam R asynchronous USB DAC, Arcam AVR 600 receiver, AQ Niagra interconnects ($1600/1m pair), AQ Redwood speaker cables ($2300/3ft pair), and Vandersteen 2Ce 30th anniversary edition speakers, the difference in transparency and color was striking.

I’m glad that John Atkinson suggested I spend no more than a half-day at the LVCC. That’s how long it took to navigate through tens of thousands of people (or so it seemed) in the South and Central Halls to reach the displays of Audio-Technica, Sennheiser, and Monster.

First stop was Audio-Technica, where I encountered former audiophile critic turned publicist Frank Doris. Together we examined three new over-ear “Audiophile headphones” and one set of in-ear noise-canceling headphones.

I sampled the most expensive of the audiophile bunch, the Audio-Technica ATH-W1000x Grandioso ($699.95) that Tyll Hertsens writes about elsewhere in this report. I also briefly checked out their new in-ear QuietPoint active noise-canceling (ANC) ATH-ANC23 headphones ($99.95). Complete with an in-line volume control, the phones will first reach the market in February 2011. I found them a pleasure to use. Unfortunately, Unfortunately, all that was available to audition were MP3s of highly compressed, noisy pop and rock.

I auditioned the HD 598, whose beige soft velour pads contrast elegantly with their black body. The salesperson who showed me around made a big deal of the packaging. Far more important were the frequency range, 15Hz–28kHz, and the sound. Although the rather bombastic source material was supposedly MP3, the headphones delivered impressively smooth bass and a far more natural-sounding presentation than I would have expected.

Hill claims that Expressivo’s soundstaging, imagery, and detail retrieval surpass those of his Maestro speaker cable. Expressivo occupies the middle of Straight Wire’s loudspeaker cable line, with three lines above it. The company’s full range of cables ranges in price $1/foot to $150/foot for speaker cable, and from $15 to $900/1m pair of interconnects.