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CH Precision and Audiovector with TechDAS at High End Munich 2025
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LATEST ADDITIONS

Music in the Round #68

Power amplifiers are unglamorous but essential. In theory, they have only one task. But, according to audio sage Yogi Berra, "in theory, theory and practice are the same. In practice, they are not." Amplifiers must take a voltage input signal and provide an output of somewhat higher voltage but of substantially higher current, the product of which is power. The task is complex in that this output must be applied to electrical interfaces whose characteristics vary widely from speaker to speaker—across the audioband and, for some, even at different power levels. There are no control mechanisms or feedback signals to help. The power amp must just stand and deliver.
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Recording of January 1984: Debussy: Three Nocturnes; Jeux

rotm184.pjil.jpgDebussy: Three Nocturnes; Jeux
Concertgebouw Orchestra of Amsterdam, Bernard Haitink conducting.
Philips ACD 400-023-2 (CD).

This is the first classical CD I have heard that was originally mastered on analog tape, and the sound is quite different from what I'm accustomed to hearing from the silver discs.

I had read so many critics' complaints about excessive background (tape) hiss from analog-mastered CDs that I was fully prepared to be appalled. I wasn't. Perhaps my speakers (Watkins WE-1s as of now) are smoother than what some other critics listen to, perhaps I prefer a more subdued high end than some, but I did not find hiss to be a problem with this Philips disc. Yes, it is audible at high listening levels, but it is not a ssss, it is a hhhh, like the sound of a very gentle rain far off in the background. I have heard worse hiss from microphone preamps.

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Toronto: Angie's Audio Corner Opens an Annex

Toronto is turning into a happening place for audiophiles. The Toronto Audio Visual Entertainment Show being held October31–November 2, 2014, promises to be bigger and better in their new venue at the Sheraton Centre Hotel downtown. The Update TV & Stereo Elevated store, with a strong high-performance audio orientation, opened last spring in the Toronto suburb of Unionville. And now, Angie's Audio Corner, devoted to high end celebrated its second anniversary with the opening of the Annex Clearance Center in the coach house next to the main building, acting as a clearing house for used equipment of all sorts and used LPs.
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KEF R700 loudspeaker

In the late 1980s, KEF, then as now a leader in bringing new technology to loudspeaker design, developed a unique coincident driver that positioned the tweeter in the throat of the midrange/woofer cone. In a flash of inspiration, they dubbed it the Uni-Q, and the driver immediately not only found its way into the company's more upscale speaker designs, but also became a key element in a major European research project on room acoustics. That study's results appear to have been inconclusive, but the Uni-Q lives on as the defining element of KEF loudspeakers.
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Antelope Audio Zodiac Platinum D/A processor–headphone amplifier & Voltikus power supply

Professional digital audio is like gravity to consumer audio's antigravity: pro gear draws music into digital files, and consumer audio releases those same notes back out again.

It's not surprising, then, that many audiophile digital-to-analog converters come to us from the pro-audio industry, which has a hierarchy similar to the consumer side: value-oriented products all the way up to ultimate-performance brands. Examples of pro-audio companies that also offer audiophile DACs for consumers abound: Benchmark, CEntrance, Grace Design, Korg, Mytek, and Nagra, to name a few.

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AudioVision SF's Brand New Store

What a difference a change of location can make! What was originally a major challenge—AudioVision SF, one of the country's major dealerships, literally had the rug pulled out from under them by their landlord last spring, and needed to raise money and scurry to a new location—has turned into a major opportunity: a spanking new venue, whose main listening room sounds much—that's much, as in much—better than before.
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