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According to Marjorie Stiefel, who with her husband Al slaves over the Rocky Mountain Audio Fest for months on end, this year's RMAF has 142 exhibit rooms, 29 more than last year. The show, has in fact, not only reached the hotel’s size limit—the DTC Marriott is Denver's third-largest—but also exceeded Marjorie's and Al’s energetic capacity. Fried to a crisp beyond the smile, the couple is considering hiring help for next year in order to meet increased demand from such major players as Linn, McIntosh, Esoteric, dCS, Kimber, Wilson, BAT, Gamut, Clearaudio, Edge, Ayre, Nordost...you…
Nelson Pass is up to good again. Following the wonderful sound of Ella and Billy I heard in the corridor, I discovered Nelson's prototype open-baffle speaker system. It sports both a Lowther PM6A full-range driver and a pair of SEAS W26 10" woofers. The 40"-high open baffle, which at this stage of the game is not intended to be a final design statement, has no side panels, only a central brace in the rear. The system was bi-amped, with the Lowther driver fed using a 60Hz, 6dB/octave high-pass filter feeding a First Watt F3 7Wpc JFET amplifier. The woofers were driven by a Pass Labs…
Santy Oropel of Twin Audio Video Inc. of Loma Linda, CA was producing some very nice sound with Triode Corporation’s TRV-A88SE, a KT88-based, 12Wpc, single-ended integrated amplifier ($1800) and TRV-4SE Limited Special Edition tube preamplifier ($2750). Everything save the faceplate and casing is made in Japan.
I was utterly intrigued by the innovative speakers from Dr. Shelley Katz’s UK-based Podium Sound ($5995/pair). Katz produces panel loudspeakers that mechanically vibrate via electromagnetic drivers. Inherently free from phase error and less sensitive to placement than electrostats, they operate full-range without any filters.
Katz, who graduated from Juilliard and received his PhD at the University of Surrey in Guildford, first started his company on December 1, 2006, 13 years after he began researching loudspeakers. His PhD thesis, on the cognition of expression in music, allowed…
John Atkinson and I have made an agreement. When John is not taking part in any of the eight "Demonstration of Live High-Resolution Recordings" seminars he has scheduled over the course of the Fest, he will cover the exhibits in the Marriott's Atrium rooms, and I will cover exhibits in the Tower. Of course, each of us is free to cross over to the other side if we're dying to hear something. But that's the plan.
As I head to the Tower, I stop to say hello to Robert Stein of UltraSystems, Inc./The Cable Company. (You know, 57 varieties, all kosher. Robert is excited about HiFi-Tuning…
As Jason said, I started my coverage of the much-expanded RMAF with the Atrium rooms, and at the corner of the ground-floor level, I encountered Gary Leonard Koh of Genesis Advanced Technologies. Gary brought me up to date on what has been happening with the Seattle company since parting ways with veteran speaker designer Arnie Nudell.
The Model 5.2 that I favorably reviewed in February 2006 is now the 5.3. The impedance is now above 3 ohms at all frequencies, and the "wolf-tone" problem I had noted with the circular ribbon tweeter is said to have been eliminated. A different…
"How often do you hear no limiting, no compression, no mixing, and no equalization? Recorded in DSD and played back the same way today" announced the blurb for Ray Kimber's IsoMike dem at RMAF. Inrigued, I entered the ginormous Ballroom F to be confronted by a system costing no less than $507,288! The six pairs of humongous Sound Lab ProStat 922 electrostats were joined by two pairs of a prototype speaker from Sony in Japan, all driven by no fewer than 8 Pass Labs X350.5 monoblocks. Source was Ray's latest four-channel DSD master files stored on a Genex hard-disk recorder and decoded…
One aspect of audio Shows that I love is the software pavilion, where audiophiles can browse new, old, are rare vinyl to their hearts' content. Acoustic Sounds’ Chad Kassem wanted to show me some of his new Analog Productions releases, but ended up telling me about his recent purchase of 30,000 sealed LPs—one and a half 53' trailer's worth—that had been in storage since 1981, the stash assembled by an eccentric collector long since passed away.
I couldn't resist the wonderful sounds of Louis Prima coming from the Green Mountain Audio room. Paired with Jaton Corporation’s Operetta AP2140A 2-channel Distributor amplifier ($1000, 140Wpc into 4 ohms, 70Wpc into 8 ohms), whose "processing filter circle eliminates 99.99% of noise at maximum volume," the intriguing-looking Green Mountain Calypso loudspeaker ($10,000/pair for the next month or so before the price increases 10–15%) was producing the kind of extremely smooth sound that draws you into the music. The speaker measures 88–89dB sensitivity, and utilizes a simple, first-…
Walking to the Kimber dem, I heard the familiar sounds of the Beatles' "Come Together" coming from the open door of the Usher room. I had to go in. A pair of the Taiwanese manufacturer's Dancer Be-718 two-ways ($2795/pair) was playing the song, fed by the LP release of Love on an Oracle tonearm/turntable fitted with a Zyx Atmos cartridge, which in turn was feeding the Oracle Temple phono stage, Oracle DAC 1000 preamp, and Usher's R.15 amplifiers. Cabling was all JPS Aluminata. Considering the large room, the relatively small Dancers appeared to have no problem filling it with sound.…