Larry Greenhill
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CES 2013
Larry Greenhill Jan 15, 2013 0 comments
According to T+A (Theory plus Application) ElektroAkustik's Lothar Wiemann, the manufacturer is one of Germany's largest electronics companies. (It is distributed in the US and Canada by Dynaudio North America.) This company makes the 1000 W M10 monoblock hybrid amplifiers ($33,0000/pair), where the output stage uses tubes to handle the voltage and transistors handle the current.
CES 2013
Larry Greenhill Jan 15, 2013 0 comments
Audio Research had live demonstrations of a number of new products, including its new CD transport, the vacuum tube Reference CD-9 player ($13,000) and the vacuum-tube Reference 10 line stage preamplifier ($30,000). These were included in a system with their vacuum tube Reference Phono2 SE phono preamplifier ($13,000), their Reference D/A converter ($16,000), Reference 250 monoblocks ($26,000/pair), and a pair of DSM450M solid-state power amplifiers ($11,000/pair). The Ref250s and DSM450s were used to bi-amp a pair of Sonus Faber Aida speakers.
CES 2013
Jason Victor Serinus, Larry Greenhill 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).

CES 2013
Larry Greenhill 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.
CES 2013
Larry Greenhill 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.
CES 2013
Larry Greenhill 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.
CES 2013
Larry Greenhill 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.
CES 2013
Larry Greenhill, Jason Victor Serinus 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.
CES 2013
Larry Greenhill 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.
CES 2013
Larry Greenhill Jan 13, 2013 0 comments
Bryston's new product line-up for 2013 includes a replacement for its venerable 2B stereo amplifier, the 2.5B amplifier ($2995). Similar to the new BP-17 preamplifier ($3550, see below), the 2.5B amplifier is derived from the amplifier portion of its B-135 SST2 integrated amplifier (see related story). Bryston's James Tanner explained that the upgrade employs a much beefier power supply than its predecessor, allowing it to deliver 135Wpc into 8 ohm load impedances. Bryston's new BP-17 preamplifier ($3550) is derived from the preamplifier portion of its B-135 integrated amplifier, which features balanced outputs and advanced circuitry derived from the SP-3 surround processor. The B-17 closely resembles the B-135, differing externally only in not having heatsinks and speaker outputs on the rear panel. The BP17 utilizes a software controlled, motorized analog volume dial and integrated balance control.
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