RMAF 2011

I stuck my head in the door of Room 8009. "That's Willie Nelson," I recognized that distinctive voice. "But what's he singing? Wait a second, that's Peter Gabriel's 'Don't Give Up'—WT...?" I had to go in and take a seat. Daedalus Athena three-way speakers ($9950/pair) were being driven by AMR AM-77 monoblock amplifiers which in turn were being fed signal from a First Sound Presence Deluxe tubed preamp ($9200). Source was AMR's impressive CD-77 CD Processor. Nice, very nice.

In the BorderPatrol room, we listened to that company’s beautiful-looking S20 300B single-ended power amplifier ($13,500) and EXT1 preamplifier ($12,250), driving a pair of Living Voice Avatar OBX-RW loudspeakers ($10,895/pair).

I first encountered DEQX when Kalman Rubinson and I reviewed the NHT Xd speaker system a few years back, which featured its digital signal processing to implement its crossover and response optimization. The Australian company was putting on an impressive dem of its HDP-3 standalone processor at RMAF, showing the sound of a pair of Gallo Reference speakers driven by Parasound Halo amplification could be first optimized in both time and frequency domains, then its interaction with the room. DEQX's Larry Owens, shown in the photo, enthused about an unanticipated benefit of the speaker correction was the reduction in loudspeaker intermodulation distortion.

New from the Norwegian Hegel company at RMAF was the HD11 D/A processor ($1200), which features a 32-bit TI DAC but also a unique impedance-optimizing circuit on one of its coaxial S/PDIF inputs. Single-ended digital audio connections are specified to be 75 ohm transmission lines, explained Hegel's Anders Eitzeid, but not all all datalinks conform to that specification. (The RCA plug is a major source of the impedance mismatch even when the cable itself has a characteristic impedance of 75 ohms.) The impedance mismatch creates reflections that corrupt the integrity of the RF datastream, increasing jitter.

A quarter century ago, it was de rigeur for show exhibitors to use a Linn Sondek LP12 as the source. The only Linn I have found at RMAF so far was in one of the Audio Alternative rooms, which was using the fully loaded LP12/Ekos SE/Radikal/Urika/Keel LP player/phono stage with a Lyra Kleos cartridge ($23,905). But with Wilson Sasha W/P speakers ($28,900/pair) hooked up to a Rega Osiris integrated amplifier ($8995) with AudioQuest cables, the sound of Dusty Springfield's "Son of a Preacher Man" from the new APO 45rpm pressing of her classic Dusty in Memphis album was vividly real-sounding.

A highlight of the 2011 RMAF was the first public demonstrations of James Guthrie's 40th-anniversary surround mix of Pink Floyd's classic Wish You Were Here, hosted by Acoustic Sounds' Chad Kassem (shown in my photo) and James Guthrie. With a system comprising five ATC professional active monitors fed by a Playback Designs SACD player, Showgoers were treated to a complete playback of the album from the SACD, to be released next month.

From the opening sound effects that tracked from the rear to the front, to the final fade on "Shine On You Crazy Diamond Part 9", listeners were immersed in the re-creation of one of the finest rock albums of all time. I felt Guthrie's surround mix was true to the band's original two-channel intentions while expanding the soundfield to take full advantage of the multichannel medium. "Magnificent!" I scrawled in my notebook. The Studio Six SPL meter on my iPhone indicated that the sound pressure reached 106dB—the experience was like being at the highest fidelity rock concert ever!