John Atkinson

With Benchmark's high-value DAC1 D/A headphone amplifier getting a little long in the tooth—our original review was in July 2003—it was good to hear the new DAC2 HGC ($1995) at Axpona. The DAC2 uses an asynchronous USB2.0 interface, will decode DSD files, has five digital inputs, two single-ended analog inputs, balanced and singled-ended analog outputs, two headphone outputs, and features a hybrid analog/32-bit digital volume control that preserves resolution. Analog signals are never digitized; digital signals never pass through an analog potentiometer; yet both analog and digital volume are controlled with a single knob.

Channel D's Rob Robinson was using the same combination of Joseph Audio Pulsar speakers, Hegel amplification, and a Lynx Hilo D/A processor that he used at earlier shows to show off the LP rips made with his Pure Vinyl program for the Mac, now in its v3.1 incarnation. In honor of the late Alvin Lee, Rob played me a rip from a Kevin Gray-mastered 10 Years After LP, made with an Artemis turntable/arm, Zu DL103 cartridge, and the latest version of the Channel D SETA L solid-state phono preamplifier. I have been getting increasingly impatient with the occasional ticks and pops with my LP rips, as eliminating them is too much like work. But there was no such noise on Rob's rips, a tribute to his LP player.

M•A's Todd Garfinkle always makes good music at shows and Axpona was no exception. Todd was driving a Primare PRE32 preamp and Primare A363 power amp with single- and double-rate DSD master files, played back from his Korg recorder. Speakers were the two-way Elac BS244s, which combine an AMT tweeter with a dimpled metal-cone woofer. Piano and drums had excellent jump factor combined with clarity and accurate midrange tonality, despite the modest-looking, table-top set-up.

Chicagoland dealer Quintessence devoted a large ground-floor room to the Fine Sounds groups of companies—Sonus Faber, Audio Research, Wadia, and Sumko/REL—along with the superb racks from Harmonic Resolution Systems and a Clearaudio/Benz Micro LP player. A pair of the Sonus Faber Amati Futura speakers that I reviewed in May 2012 ($36,000/pair) was being vertically bi-amped with two tubed Audio Research Ref250 monoblocks driving the midrange/tweeter sections and two solid-state Audio Research DS450M monoblocks for the woofers. No fewer than four REL powered subwoofers were handling the low bass. Preamp was the Audio Research Ref5 SE that Brian Damkroger and Bob Reina raved about in Stereophile.

The mighty Focal Grand Utopia EM loudspeakers ($190,000/pair), which use field-coil energized woofers, took pride of place in one of the two big rooms on the Doubletree's ground floor sponsored by Chicagoland dealer Quintessence. Driven by two-chassis Pass Labs Xs300 monoblocks with Kubala-Sosna cabling throughout the system, both the 1950s Duke Ellington and Johnny Hodges collaboration "Back to Back" and the Reference Recordings Rutter Requiem were reproduced with a stunning combination of vocal purity and instrumental majesty. Source was a file fed by USB to a Playback Designs player/DAC.

My first visit at AXPONA was to the large ground-floor room where AIX Records' Mark Waldrep (pictured) was playing back some of his superb-sounding multichannel recordings from Blu-ray, complete with hi-def video.

The following morning, Friday March 8, the line of Showgoers formed at the will-call booth at least an hour before the official 1pm start of AXPONA. More than 2000 tickets had been presold and the exhibit rooms were full until the end on Sunday March 10.