Shortly after I moved to Scottsdale, Arizona, in the late ’80s, a local HiFi dealer put the full-court press on me and insisted that I buy an MV-50, which sounded great in his shop driving a pair of Vandersteen 2Ci’s. Chalk it up to owning and selling Phase Linear back in the late ’70s. But from the beginning of my HiFi journey, I felt that a high-powered solid-state amplifier was required to get the job done. I was always a huge fan of CJ tube preamplifiers, starting with their PV-1. The MV-50 was built from 1985 to 1990 and had a similar tube complement with an original retail price of $1,485. Both models then went through A and A1 revisions. The following year, they introduced the MV-45, which was an E元4-based amplifier. More about those capacitors later.ĬJ’s first vacuum-tube power amplifier that used 6550 output tubes, the MV-75, was introduced in mid 1979. ![]() As is the way at CJ, this design was steadily improved over the years in the form of the MV-52, MV-55, MV-60 (and the 60SE, which utilized 6550 output tubes for more power) to the recent LP-70 power amplifier, which also uses 6550s, and CJ’s latest CJD Teflon capacitors. The MV 50 was one of Conrad-Johnson’s earliest vacuum-tube power amplifiers, utilizing E元4/6CA7 output tubes, with a modest power output of 45 watts per channel.
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