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In Reply to: RE: Some amplifier advice needed posted by Michael Samra on July 16, 2016 at 23:56:17
I like Conrad-Johnson products and have heard a number since 1980 including the Premier One and ART Series II. From my perspective, however, the MV75 has a fatal flaw: poor low level resolution.
Many moons ago, I borrowed one from a reviewer friend and compared it to my Threshold Stasis 3 driving Acoustat 2+2s. Nice amp overall, but like the AR Integrated amp before it, it loses it when the going gets soft.
If you find the "first watt" to be important, this amp is not a good match.
Follow Ups:
Ralf
Would you believe I had the very first CJ Premier one power amp they made.It was serial number 00001 and I got it from my audio mentor after he passed away and I ended up selling it to a truck driver in Canada..It was good when you cranked it up but it lacked detail in the upper ranges and this was on Magnepan Tympani 4s...The Premier 2 preamp was fabulous tho.The problem you mention about low level resolution was very apparent in the Premier one until you cranked it up..The Dyna Mk3s actually had better resolution even in stock form and that's why I sold it.
Kenny got the Premier one from the President of IMF Electronics USA and his name was Ron Bliss..IMF USA was two blocks from my house at the time.
If I had known then what I know now about upgrades and mods,I could have improved the amp but it was only to 15khz.. The MV75 later versions were very good actually.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
Edits: 07/18/16
driving the IRS towers.
The problem you mention about low level resolution was very apparent in the Premier one until you cranked it up.
Yogi Berra couldn't have said it any better. :)
The Perreaux 2150 and the 5150 were very good amps as well but my favorite SS amp is still the Threshold SA series..I still have my 800a tho.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
in terms of great sounding high powered solid state amps of that day. The dealer where I used to hang out in high school got one circa '75 to drive their Dayton-Wrights. The lights would dim when that sucker powered up.
What an incredible beginning for what time has proven to be a gifted designer. I had a lower output Stasis 3 for over thirty years. I wouldn't mind hearing one of Nelson's latest Xs series amps. :)
SPECIFICATIONS
Power: 200 watts per channel, minimum RMS at 4, 8, or 16 ohms from 30Hz to
15kHz, with no more than 1% total harmonic distortion or intermodulation distortion.
Sensitivity: 1.0 volt to full power
Small Signal Distortion: less than .051 at midband
Phase: Phase correct (non-inverting)
Frequency Response: 20Hz to 20kHz to -.5 db
Hum and Noise: 100 db below full power output
Input Impedance: 100k ohms
Dimensions: 19 x 10 ½ x 12 ¼"
Weight: 135 lbs
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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