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-   -   Anyone have Jan 1987 Stereo Review "Do All Amplifiers.." (http://www.diyaudio.com/forums/everything-else/119791-jan-1987-stereo-review-amplifiers.html)

cuibono 21st March 2008 12:26 AM

Anyone have Jan 1987 Stereo Review "Do All Amplifiers.."
 
"Do all amplifiers sound the same", the infamous amp comparison? I'd love to read it, and maybe some other folks on the board. Anyone want to share?

Ron E 21st March 2008 04:49 PM

Re: Anyone have Jan 1987 Stereo Review "Do All Amplifiers.."
 
Quote:

Originally posted by cuibono
"Do all amplifiers sound the same", the infamous amp comparison? I'd love to read it, and maybe some other folks on the board. Anyone want to share?
...Ever been in a library...? Arlington should be big enough to have one... ;)

One detail I seem to recall from 20 years ago is that a cheapo pioneer receiver had the same short circuit current as a Mark Levinson Amp ;) Something like 12.5 amps.

andy_c 21st March 2008 05:06 PM

Re: Anyone have Jan 1987 Stereo Review "Do All Amplifiers.."
 
Quote:

Originally posted by cuibono
"Do all amplifiers sound the same", the infamous amp comparison? I'd love to read it, and maybe some other folks on the board. Anyone want to share?
Is this what you're looking for?

cuibono 21st March 2008 09:20 PM

Thanks guys - yes, I think I have been in a library once, to use the bathroom. :D I assumed that very few libraries would have an old obscure mag, but I will of course check. I had seen the link to the guy selling photocopies, I had just figured it was likely someone here had a copy. If not, I'll spring for the $6.

SY 21st March 2008 09:22 PM

Didn't you follow Andy's link? It's there.

cuibono 21st March 2008 11:18 PM

Whoops! I just looked at the web address, and thought I had already seen it. :cannotbe:

7n7is 21st March 2008 11:55 PM

I recommend this book.
http://www.audiophilia.com/features/gizmo_book.htm

Pano 22nd March 2008 02:22 AM

Thanks very much Andy_c! Great reading.

Now I remember the the test, because of the Magnapans.

There are a few technical questions that are not answered for me, but still a great test.

I'll reserve comment for the amp thread.

jan.didden 22nd March 2008 10:19 AM

I read this article, and have a question for those who are less statistics-challenged than I am.

In one comparison, it appears that the percentage of correct answers was 25 or so. That means that 75% of the answers were wrong. Does that in itself not mean anything? If a chance answer would be right 50% of the time, and I have it wrong 75% of the time, isn't that some kind of pointer? Don't know, maybe this is all non-sense, and if so I shut up.

Jan Didden

SY 22nd March 2008 03:12 PM

No, that is significant. It would be worth digging around a bit to nail down why that happened.

edit: This result happened for the smallest sample set. I'd guess that it's noise, but I would have wanted more trials for that particular comparison.


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