Some of us still remember the old "Carver Challenge," from the 1970s. Bob was a precocious, brilliant young designer of amplifiers, a magician with circuits. (By the way, he still is.) He challenged Stereophile to nominate any really great sounding high end amp, and he would match its performance characteristics and sound with a specially-tailored (solid state?) doppelganger. He claimed it could be made to sound exactly identical. The resulting circuit characteristics were memorialized in a commercialized product -- the Silver 7s. One unfortunate aspect of this publicity stunt was a dismaying degree of heated controversy that resulted in Bob falling completely out of favor with the high end community. He still does great work, but he and the main mags have apparently agreed to stay away from each other.
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