Anyone have Jan 1987 Stereo Review "Do All Amplifiers.."

cuibono · 20th March 2008, 11:26 PM

"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, 03:49 PM

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, 04:06 PM

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, 08:20 PM

Thanks guys - yes, I think I have been in a library once, to use the bathroom.

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, 08:22 PM

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

cuibono · 21st March 2008, 10:18 PM

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

7n7is · 21st March 2008, 10:55 PM

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

Pano · 22nd March 2008, 01:22 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, 09:19 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, 02:12 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.

20th March 2008, 11:26 PM	#1
cuibono diyAudio Member Join Date: May 2006 Location: City of Angles	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? __________________ double complete rainbow all the way!!

21st March 2008, 08:20 PM	#4
cuibono diyAudio Member Join Date: May 2006 Location: City of Angles	Thanks guys - yes, I think I have been in a library once, to use the bathroom. 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. __________________ double complete rainbow all the way!!

21st March 2008, 08:22 PM	#5
SY diyAudio Moderator Join Date: Oct 2002 Location: Chicagoland Blog Entries: 1	Didn't you follow Andy's link? It's there. __________________ If there's a sucker born every minute, where do the rest of them come from?

21st March 2008, 10:18 PM	#6
cuibono diyAudio Member Join Date: May 2006 Location: City of Angles	Whoops! I just looked at the web address, and thought I had already seen it. __________________ double complete rainbow all the way!!

22nd March 2008, 01:22 AM	#8
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	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. __________________ Take the Speaker Voltage Test!


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21st March 2008, 10:55 PM	#7
7n7is diyAudio Member Join Date: Mar 2006 Location: VA	I recommend this book. http://www.audiophilia.com/features/gizmo_book.htm

22nd March 2008, 09:19 AM	#9
jan.didden diyAudio Member Join Date: May 2002 Location: Great City of Turnhout, Belgium Blog Entries: 6	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 __________________ /Yes! Its out: Linear Audio Vol 5! I'm not an "accademic", just a plodder who loves a challenge - Ian Hegglun

22nd March 2008, 02:12 PM	#10
SY diyAudio Moderator Join Date: Oct 2002 Location: Chicagoland Blog Entries: 1	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. __________________ If there's a sucker born every minute, where do the rest of them come from?

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