Larry Greenhill

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Larry Greenhill Jason Victor Serinus Posted: Jan 14, 2013 0 comments
English manufacturer Chord Electronics is known for its sophisticated CD players, which use sophisticated DACs. Indeed there was a huge picture denoting Chord's latest-generation DAC, the QBD 76, at the center of the back wall. As my beat was amplifiers, Chord's designer, John Franks (pictured above), spent the next 30 minutes walking me through the design of Chord's latest amplifier, the SPM 1200 Mk.II ($14,000), a solid-state, 350Wpc stereo mode. The amplifier sits at the bottom of the short stack of audio equipment John is leaning on. He explained that the amplifier has a high-frequency, 2kW, switch-mode power supply, and uses an output stage based on dual-die, lateral-structure MOSFETs with a soft turn/on-turn/off characteristic. This allowed John to use a sliding class-AB design.
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Larry Greenhill Posted: Jan 14, 2013 0 comments
I stumbled into the Naim Audio Exhibit and was faced with a wall of amplifiers and electronics. Chris Koster, of the Sound Organisation, Naim's US importer, guided me through the Naim amplification that was being used to drive the tri-amplified loudspeakers in the room. Starting from the left, the rack held three NAP-500 solid state amplifiers ($28,000 each).Sitting just above the three amplifier chassis at the extreme left was a Naim Snaxxo 362 ($3500) active crossover; its Naim Supercap power supply, sitting at the top of the center column, powered the Snaxxo. Each of the amplifier's individual NAP-500 PS power supplies occupied the three lower shelves at the center of the rack. The two top center shelves held the power supplies for the NAC552 preamplifier ($28,000) and the NDS Media Streamer ($11,000), whose control chassis could be found at the extreme right of the rack.
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Larry Greenhill Posted: Jan 14, 2013 0 comments
Perfect8 Techologies' exhibit suite at the Venetian proved to be one of the most crowded I entered. Perfect's CEO, Jonas Rantila, was introducing his new floorstanding speaker, the Point Mark II Evolution ($115,000/pair). This three-way, speaker features an Air-Motion Transformer tweeter and two midrange drivers mounted on a glass baffle (there's no enclosure for the tweeter or midrange drivers), sitting on a single glass-enclosure housing a pair of 10" subwoofers powered by a 400W, DSP-controlled amplifier hidden within the enclosure. Power for the midrange and tweeter was supplied by a 165 lb, 500Wpc, solid-state Bridge Audio Laboratory (BAlabo) BP-1 Mk.II stereo power amplifier ($88,500). The BP-1's importer, Fred Nadel, told me that the amplifier's output stage runs in class-A for the first 40 watts.
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Larry Greenhill Posted: Jan 14, 2013 0 comments
When I visited Nagra's exhibit at the Venetian, Jean Paschal Panchard, Nagra's representative, was out for a meeting. I asked his colleague, Jorgen Olofsson of Marten loudspeakers (the $77,000/pair Marten Coltrane Tenors were being driven by Nagra electronics), what was the "newest" Nagra product being shown. He mentioned Nagra's new Melody high-end solid-state preamplifier. Like the all-tube Jazz preamplifier, the Melody features the traditional Nagra look with the modulometer on the front face to indicate output signal level. The Melody weighs 7 lbs, and has a rated bandwidth of 10Hz–50kHz, +0/–1dB. Like the Jazz, all five RCA inputs and the two switchable outputs (one RCA and one XLR) are all on the back panel. It can accept an external power supply, such as the Nagra ACPS II or the new multiple power supply name the Nagra MPS. The Melody’s suggested retail price in the USA will be $7500 and the optional phono stage will cost $1500.
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Larry Greenhill Posted: Jan 14, 2013 3 comments
I ran into Dan D'Agostino, in the hallway of the Venetian. He was hurrying off to a meeting, but had a moment to mention that his amplifiers were being used in live exhibits in several rooms, including YG and Light Harmonic DaVinci, among others. I asked if there was anything new at the show, and he smiled and mentioned the new Momentum preamplifier. I found the D'Agostino room and his partner Petra, showed me the preamplifier, which was on passive display.
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Jason Victor Serinus Larry Greenhill Posted: Jan 14, 2013 0 comments
Photograph: Larry Greenhill

Theta Digital, the pioneer of digital separates, announces the mighty Prometheus monoblocks ($12,000/pair). Heard in pre-production mode, with bass so strong and tight that it sent me into the hallway to discuss the product, the 200Wpc into 8 ohms monoblock is due out "within 90 days" (to quote a mantra oft-repeated at CES 2013).

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Larry Greenhill Posted: Jan 13, 2013 Published: Dec 31, 1969 3 comments
Harman International’s High-Performance Group’s exhibit featured a live demonstration of its most expensive equipment, including two Revel Rhythm 2 18" subwoofers ($10,000 each); two Revel Ultima2 Salons ($22,000/pair); a Macintosh MacBook Pro running Amarra software driving a Mark Levinson No.502 Sound Processor; a No.52 preamplifier ($30,000); two No.53 Reference monoblock amplifiers ($25,000 each); and Transparent power conditioners for the digital equipment and for the amplifiers. The rack also included a No.512 SACD player. The Revel Ultima2 Salons were crossed over to the subs at 80Hz with 4th-order slopes for both high-pass and low-pass filters. Listening to Diana Krall singing "I Used to Love You," I was struck by how all the loudspeakers and electronics disappeared leaving a holographic image of her voice, with a wide and deep soundstage.
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Larry Greenhill Posted: Jan 13, 2013 1 comments
Revel’s new Rhythm 2 subwoofer ($10,000) contains a pair of 2000W class-D amplifiers (said to offer 4kW on peaks); an 18" driver with a 4” voice-coil; over 114dB maximum acoustic output; high-resolution DSP room equalization; fully configurable electronic crossover; and PC or Mac setup via USB. Kevin Voecks, its designer, described how the subwoofer's highly sophisticated DSP engine can equalize both the subwoofer and the satellite speakers. The DSP-driven room equalization generates adjustments from one set of room measurements, correcting for as many as 10 modes in the frequency range of 20–400Hz.
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Larry Greenhill Posted: Jan 13, 2013 1 comments
Axiss Audio’s attractive setup at the Venetian highlighted AirTight's huge ATM-3011 monoblock amplifiers ($50,000/pair). The amps were part of a system that included the Focal Scala loudspeakers ($30,000), Transrotor Rondino turntable ($14,000), SME V tonearm ($5,000), AirTight PC-1 moving-coil cartridge ($11,000), AirTight ATC-2 line preamplifier ($11,000), AirTight ATE-2 phono stage ($15,000), and ATH02 step-up transformer ($5,000). The sound was involving and dynamic.
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Larry Greenhill Posted: Jan 13, 2013 0 comments
Cary Audio demonstrated its CAD-211 ($20,000/pair) 150W tube amplifiers, two-chassis piece SLP-05 tube preamplifier ($8500), and CD-303T SACD player ($6500), with Tannoy's flagship floorstander, the Kingdom Royal ($55,000/pair). All cabling was by WyWires. The Tannoy is a four-way speaker design, with a 15" woofer handling music below 150Hz, the midrange handling up to 700Hz, the tweeter up to 17kHz, and the super-tweeter up to 65kHz. The Kingdom Royal is very sensitive at 94dB/W/m —the resulting sonics were clear, delicate, and musically involving. And as John Atkinson said when he listened to this system, “there’s no substitute for horsepower.”

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