Sort By: Post Date | Title | Publish Date
Filed under
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.
Filed under
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.
Filed under
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.
Filed under
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).

Filed under
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.
Filed under
Larry Greenhill Posted: Jan 13, 2013 1 comments
MBL’s Corona Line C-15 class-D monoblock amplifiers ($12,500 each) are rated at 500W into 4 ohms with low distortion, and none of the rising distortion with frequency found in other class-D designs. In addition, the distortion is load independent. This is a result of the circuit design MBL calls a "Linear Analog Switching Amplifier Design” (LASA). MBL designer Jurgen Reis was proud that the amplifier had been designed to meet the stringent South Korean "KT" consumer standard regulations, and "was on the way" to meeting the even more stringent "CCC" Chinese consumer requirements. Although the switching occurs at 300kHz, the amplifier is free of RF emissions up through several MHz because of extensive mu-metal shielding. The amplifier and preamplifier are available in several different cosmetics including a white or black chassis with center section in gold or chassis color. Matching C-11 preamplifier and C31 CD player, with price points are also available.
Filed under
Larry Greenhill Posted: Jan 13, 2013 2 comments
At 95 lbs, Dan D'Agostino’s 300W into 8 ohms, Momentum monoblock amplifier ($50,000/pair) doesn’t even come close to the weight of the big Boulders. Featured on the cover of Stereophile’s CES issue, the Momentum could be heard in many rooms at CES. This compact, energy-efficient design was driving the new YG Electronics Sonja 1.3 speakers ($106,800/pair). The resulting sound was dynamic, effortless, open, and had a wide, deep soundstage.
Filed under
Larry Greenhill Posted: Jan 13, 2013 2 comments
Bryston showed a static model of its new loudspeaker system, the Model T Signature ($7495/pair), that is specified to handle 50–1100 watts into its 8 ohm impedance, with a frequency response from 25Hz–22kHz, ±3dB. In active form, the Model T uses the AX1 external DSP crossover ($2995), but the passive version’s crossover features large, expensive air-coil inductors, as well as something brand new: Bryston capacitors. Working with Clarity, Bryston's James Tanner specified the exact requirements for these capacitors, which have both company's names featured on their blue exteriors. The Model T benefited from Bryston's close relationship with with Axiom, a speaker design company that has its own large anechoic chamber. The Model T is available in Black Ash, Boston Cherry, or Natural Cherry veneers.
Filed under
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.
Filed under
Larry Greenhill Posted: Jan 13, 2013 2 comments
Lamm Industries introduced the new LP-1 Signature dual-mono phono preamplifier ($32,790), with two separate chassis power supplies. Each channel uses two high-transconductance triodes without feedback. The new phono preamplifier was used in a system with Lamm ML-3 amplifers ($159,490), an LL-1 preamplifier ($42,790), connected to a pair of Wilson Audio MAXX3 speakers ($69,500/pair) with Kubala-Sosna cables throughout. Music was played on a Kronos turntable ($32,000) fitted with a Graham Phantom II Supreme tonearm ($6000) and a ZYX Universal II cartridge ($8,495). Vladimir Lamm was also using two pairs of his ML2.2 monoblocks ($37,290/pair) to drive a pair of Verity Audio Lohengrin loudspeakers ($120,000/pair) in an adjoining room. The sound in both rooms was spacious, smooth, dynamic, and full.

Pages

X
Enter your Stereophile.com username.
Enter the password that accompanies your username.
Loading