John Atkinson

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John Atkinson Posted: Oct 22, 2013 4 comments
Ray Kimber always gets great sound at shows, but this year, although he was still using four Sony SS-AR1 loudspeakers hooked up with Kimber Select cables and an EMM DAC to play his four-channel IsoMike DSD master files, there was something extra-magical happening in the room. Both pianist Fan-Ya Lin's album Emerging and the Romantic Album from violin and piano ensemble the Formosan Duo, sounded tangibly real. The key, it turned out were the gigantic, 300lb MTRX class-A/B monoblocks from EMM Labs, can be seen in my photo. This brute will output 1500W into 4 ohms and, in Ray Kimber's words, extracts "cheerful obedience" from the speakers it is tasked to drive.
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John Atkinson Posted: Oct 22, 2013 1 comments
Listening to Scaena's Silver Ghost speakers ($153,000/system) had been a highlight of last March's AXPONA in Chicago. At the Denver Tech Center Hyatt, the speakers had been set-up by Sunny Umrao (in photo) firing diagonally across a much larger room than in Chicago. With a system comprising a dCS Vivaldi digital source driving an Audio Research Reference 75 stereo amplifier for the towers and six inexpensive Crown class-D amplifiers for the six woofer modules operating below 120Hz, the sound of a live recording of Dave Brubeck's "Rondo a la Turk" did indeed sound live.
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John Atkinson Posted: Oct 22, 2013 0 comments
Bel Canto's John Stronczer was excited. "The Powerstream amplifier's S/N ratio is 120dB measured at the speaker terminals!" I was impressed. This is equivalent to 20-bit digital audio, which means this digital-input monoblock, which costs $15,000 each, is one of the quietest amplifiers I have encountered. It offers 300W into 8 ohms, 1200W into 2 ohms. Audio data presented to the ST-optical inputs are reclocked and then converted to analog with a BurrBrown PCM1792. The analog signal is then fed to an output stage based on the well-regarded Hypex class-D modules, used in a proprietary low-gain configuration to maximize dynamic range.
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John Atkinson Posted: Oct 21, 2013 0 comments
At the 2012 RMAF, Ayre Acoustics had decorated their room in the Marriott's tower to resemble a 1950s bachelor pad, complete with lava lamp. This year, the theme was Charlie's Records, complete with racks of bargain LPs offered for sale. It was great to see Ayre founder Charlie Hansen (left, above) back in action at a show, after a long hospitalization. The system featured JBL K2-9800SE speakers driven by Ayre's VX5 power amp and KX5 preamplifier, with source either an Ayre DX5 universal player or an Ayre/Bauer DPS turntable amplified by an Ayre P5 phono preamplifier.
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John Atkinson Posted: Oct 21, 2013 0 comments
Michigan retailer Paragon Sight & Sound's room on the Marriott's ground floor featured the Wilson Alexia speakers $48,500/pair. I was familiar with the Alexia, having just finished reviewing it for the December issue of Stereophile, as I was with Audio Research's CD9 CD player ($13,000), but not all with the Doshi Jhor 160 tube monoblocks (projected price of <$36,000/pair) that were driving the Alexias via Transparent Audio Reference XL cables, or the Doshi 3.0 tubed line stage and Doshi 3.0 tubed phono stage, both of these projected to sell for <$20,000 each. Michale Fremer was playing a Acoustic Sounds 45rpm test pressing of a Beach Boys album on the Pro-Jekt HL Signature turntable, fitted with a Koetsu Azule Platinum cartridge, when I entered the Paragon room, with all the equipment mounted on impressively engineered HRS racks and stands. "Midrange magic!" I wrote in my notebook as the Beach Boys launched into "In My Room."
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John Atkinson Posted: Oct 21, 2013 0 comments
These nice-looking standmounts are Salk Sound's Exoticas ($6000/pair), which use new high-performance drive-units from SEAS. Driven by an AVA solid-state amp (bottom in the rack), they produced a natural sound on a Kimber IsoMike cello recording. But when I first entered this room, the less-expensive, floorstanding Salk Sound Towers, which sell for less than $2000/pair, were producing a big sound on a Trentemoller track, driven by AVA's Ultravalve tube amplifier ($1995, above the solid-state amp in the rack), which gets 35Wpc from a pair of EL34s per channel. Preamplifier was AVA's new FET-Valve CF.
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John Atkinson Posted: Oct 21, 2013 0 comments
I had been impressed by the 5.1 speaker from the German Lansche company when I reviewed it in July 2012. In particular, I found Lansche's horn-loaded ionic tweeter produced superb treble sound quality. At RMAF, I photographed Aaudio's Brian Ackerman standing by the enormous, 900lb Lansche 8.2 ($266,000/pair in Macassar ebony veneer), which combines that ionic tweeter with four 8" mid/woofers, crossed over at 2.5kHz.
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John Atkinson Posted: Oct 21, 2013 0 comments
I went into the SimpliFi room expecting to see the excellent Weiss MAN301 media player and effective DSPeaker room correction and D/A devices. Yes, there were there at RMAF but SimpliFi's Tim Ryan wanted to talk about the Swiss Klangwerk Ella active speaker ($15,000/pair) shown in my photo. This modest-looking floorstander uses DSP to make it work as a time-aligned virtual point source. A constrained layer-damped Corian front baffle supports an advanced Aerogel-dome tweeter from Audax and a 5.5" woofer; two more 5.5" woofers covering the same passband are placed on the speaker's sides, and all three are reflex-loaded with a downward-firing port. The advantage of this design is that it has a wide listening window on both vertical and horizontal planes, explained Tim, and indeed, on Dire Straits' "Brothers in Arms," I found that I could move up and down and from side to side without any significant change in the perceived balance.
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John Atkinson Posted: Oct 21, 2013 1 comments
"That's a lot of bass!" I was listening to the audiophile version of Nine-Inch-Nails' "A copy of a copy..." on Bryston's three-way Mini-T stand-mounted speakers ($2695/pair). The speaker's woofer has a large half-roll surround, suggesting good linearity at large excursions, which was confirmed by the fullrange sound in the room. The rest of the system included Bryston 28B monoblocks, hooked up with StraightWire cables and with a Bryston BDP-2 file player and BDA-1 DAC as the source.
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John Atkinson Posted: Oct 21, 2013 0 comments
Colorado Springs-based HiFi Imports were demming their system in one of the Marriott's very large ground-floor rooms. Speakers were the Venture Grand Ultimate Mk.IIs from Belgium ($98,000/pair), which combine Venture's proprietary 2" tweeter, which uses a graphite-pulp-composite diaphragm, with a 7" midrange unit and four 7" woofers. All the lower-frequency drivers use carbon-fiber/graphite-composite cones and the speaker's frequency range is specified as 22Hz–60kHz with a 92dB sensitivity.

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