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Larry Greenhill Posted: Jan 13, 2012 0 comments
Each Xs channel has two chassis, one for the power supply and the other for signal amplification. The amplifier acts as a voltage source, and is rated at 300W into 8 ohms, 600W into 4 ohms, and 1200W into 2 ohms. It is biased to ensure make certain that the amplifier remains in class-A mode into all loads. Each channel has 122 output devices with a total rating of 10kW, and the extensive heatsinking allows the Xs 300 to deliver 2kW into a load "all day long." Though the Xs 300 stack was a silent exhibit, the company was using the more modest $65,000/pair Xs 150s to drive the Pass Lab RM2 loudspeakers, which showed a wide dynamic range and outstanding detailing.
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Larry Greenhill Posted: Jan 13, 2012 0 comments
Audio Research's Chris Ossanna proudly shows off the company's new $25,000/pair, two-chassis Reference 250 monoblocks, which employ the new KT-120 output tube. This amplifier has 50% more power-supply capacitance than their previous flagship, the Reference Anniversary 110, and uses the same type of Teflon coupling capacitors they sourced for their Reference Anniversary preamplifier. The front panel metering allows the consumer to check the bias and to adjust the speed of their response to either fast or slow.
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Larry Greenhill Posted: Jan 13, 2012 1 comments
Audio Technica's PR rep Frank Doris models the company's limited-edition, $1299.95, ATH3000 headphones, that feature Echizen wood frames, 53mm drivers, Spanish lamb wool cushions, and 7x9s copper wire.
Larry Greenhill Posted: Aug 19, 2011 1 comments
"Larry, you have too many amplifiers!" exclaimed John Atkinson during a recent visit. This surprised me—I didn't think it was possible to have too many amps. While I'm not going to open an amp museum, I do have a starter collection of Mark Levinson amplifiers from different eras. This either makes me exactly the right or the wrong person to size up Mark Levinson's new No.532H.
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Larry Greenhill Posted: Jun 15, 2011 1 comments
James Tanner, VP of marketing at Bryston Ltd., was frustrated. He'd borrowed a Music Vault 4000 music server to play high-resolution digital music files at Bryston's exhibit at the 2009 Consumer Electronics Show. Most of the time, the server delivered some of the best sound at that event. The rest of the time, there were dropouts and crashes. Tanner later experienced similar dropouts and crashes when he streamed hi-rez digital files over his home network to a Bryston BDA-1 digital-to-analog converter (see my review in the February 2010 issue).

I found a more relaxed Tanner at the 2010 CES. This time, he'd borrowed an Auraliti L-1000 digital file server ($3000 at, a box with no front-panel controls, no display, no hard drive, no fans, and no CD drive. Instead of a Windows operating system, the L-1000 ran a stripped-down version of the Linux open-source operating system. Its simplicity of design solved the reliability problems Tanner had encountered the year before.

Then and there, Tanner decided to ask Auraliti to help Bryston create a simple digital music file player. The result is the BDP-1.

Larry Greenhill Posted: May 10, 2010 1 comments
JBL was founded 60 years ago, by Jim Lansing. Its history has been amply detailed in the book The JBL Story: 60 Years of Audio Innovation, by the late John Eargle's (JBL Professional, 2006). Although it is primarily known for its pro-audio loudspeakers, the Californian company has offered a steady stream of high-performance domestic loudspeakers to the home market, including the 1971 Paragon, the L100 bookshelf speaker, and the JBL 250Ti floorstander, all of which remained in JBL's catalog for 20 years. In 1990, JBL produced the Project K2 S9500 flagship speaker for the Japanese high-end market. The K2 Project culminated in the $60,000/pair DD55000 Everest system, with its cross-firing asymmetric horns, and the subject of this review, the Synthesis 1400 Array BG, was a spin-off from the K2 project. It features horn-loaded midrange and tweeters to attain a flat response out to a claimed 48kHz.
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Larry Greenhill Posted: Apr 20, 2010 0 comments
It's been over two years since I reviewed a pair of JL Audio's Fathom f113 subwoofers. Kalman Rubinson and I both gave the f113 top marks for delivering clean, powerful bass in a wide variety of full-range systems. At the end of the review period, JL Audio's Carl Kennedy told me that they wouldn't send me another subwoofer for review until they had developed one that outperformed the Fathom f113 (footnote 1). To this day, the Fathom f113 tops the subwoofer category in Stereophile's "Recommended Components."
Larry Greenhill Posted: Feb 23, 2010 0 comments
In February 2009, I reviewed Bryston Ltd.'s first CD player, the $2695 BCD-1, and was very impressed by what I heard. The BDA-1 ($1995) is the Canadian company's first standalone DAC. It's slim, only 2.75" high, with the engraved company name, model number, and infrared sensor grouped at the extreme left of a front panel of polished aluminum. Farther to the right are two columns of four LEDs each that comprise the sample-rate indicator, which identifies the selected input's signal frequency and whether the BDA-1 has locked to it. Closer to the center is the Upsample control, which governs the conversion of the incoming digital signal synchronously to 192kHz or 176.4kHz. The Upsample LED turns green for 192kHz, red for 176.4kHz. Digital sources are selected by pressing one of eight pushbuttons just right of center: two TosLink, four S/PDIF (coaxial), one AES/EBU XLR, and one USB 1.1, the last accepting only signals with sample rates at or below 48kHz. An LED above each pushbutton lights green for an incoming PCM datastreams and red for other types, including multichannel Dolby Digital streams.
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Larry Greenhill Posted: Jan 14, 2010 0 comments
Friday was the busiest day I and other Stereophile writers found at the CES venues. Pictured here is a lull in the traffic taken from a window at the Las Vegas Convention Center (LVCC) near the press room, where the line for the free press lunch stretched hundreds of feet. Later that day, the bus and cab lines at the LVCC stretched half a mile as evening approached and the temperature outside dropped from mid 60s to temperatures in the 40s (Fahrenheit). Little evidence of a recession was visible in pure crowd count, but I ran into many more Asian and European attendees, while missing some friends in the audio high end community who skipped CES this year.
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Larry Greenhill Posted: Jan 13, 2010 12 comments
I was highly impressed with the dynamics, speed, and pace of a new $8000/pair loudspeaker from John DeVore, a speaker maker from my area of the country, Brooklyn, New York. I had first read about John in the New York Times when it featured new and brave entrepreneurs making their way in Brooklyn during the recent recession. I was interested, because of my medical research background, that the very tall Mr. DeVore had been positively influenced in his younger years by an uncle who was a leading primatologist, and had take him to Africa to view various monkeys living in their natural habitat. As a result, John names his loudspeaker lines for various species, including the Gibbon, Silverback, and now Orangutan. This floorstanding, two-way, high-sensitivity ([95]dB/2.83V/m) loudspeaker features a 1" silk-dome tweeter and a reflex-loaded, 10" treated-paper woofer (rear port) in a cabinet with a lace walnut finish. I was struck by the similarity between John's energy and enthusiasm and the dynamics and pace of the music the Orangutan generated driven by the 15Wpc Mag Amp.


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