The ten most significant amplifiers of all time

[nogoodpig]

Old article, but new to me, hope it's new to others also. My favorite brand gets lots of love. Any others come to mind?

http://www.theabsolutesound.com/articles/the-ten-most-significant-amplifiers-of-all-time/

 

[JustMike]

Thanks for posting this. I do kind of remember this list when I subscribed to TAS.
Great comments on our Phase Linear's for sure.

I enjoyed the comment by "Analog Gary." The Bogen DB230 and 230A have been part of my systems since 1968,
and I still use a Gold Face 230A . I have a total of four of these amps I have collected along the way. I have one better:
The Bogen DS265. This amp uses three GS34 rectifier tubes and 7027a outputs and in-house wound transformers.
Killer amps on Blues and Jazz.

Yeah I think the Crown DC300 should be on the list.

Jm

 

[oldphaser]

I already posted this earlier on 2/23/2017 at 4:54 p.m.
http://forums.phxaudiotape.com/showthread.php/5839-Phase-Linear-(Magazine-Reviews-Articles-Etc-)



"The Ten Most Significant Amplifiers of All Time" (The Absolute Sound May/June 2011)

(NOTE: This is a re-post with images now available.)

"The Ten Most Significant Amplifiers of All Time"

The Phase Linear 400/700 made the list at number 2.


Price is $4.99 for a digital copy:

http://www.nextnewsstand.com/product...sound/tas-213/


http://www.theabsolutesound.com/arti...s-of-all-time/​

Attached Thumbnails

 

[nogoodpig]

Thanks OP, I haven't read everything here yet, but I'm trying! Give me time, I'm old and slow.

I already posted this earlier on 2/23/2017 at 4:54 p.m.
http://forums.phxaudiotape.com/showthread.php/5839-Phase-Linear-(Magazine-Reviews-Articles-Etc-)



"The Ten Most Significant Amplifiers of All Time" (The Absolute Sound May/June 2011)

(NOTE: This is a re-post with images now available.)

"The Ten Most Significant Amplifiers of All Time"

The Phase Linear 400/700 made the list at number 2.


Price is $4.99 for a digital copy:

http://www.nextnewsstand.com/product...sound/tas-213/


http://www.theabsolutesound.com/arti...s-of-all-time/​

Attached Thumbnails

 

[BubbaH]

They left out this one.

 

[oldphaser]

They left out this one.

The May/June 2011 article "The 10 Most Significant Amplifiers of All Time" which appeared in "The Absolute Sound" stated the following: "What amplifiers have had the most impact on high-end audio? Changed the market? Influenced future designs? Introduced new technologies or concepts? Established new sonic benchmarks?

So what was it about the Bose 1801 that meets the criteria that "The Absolute Sound" stated above?


Bose 1801/1800 Service Manual:
http://electronics-diy.com/pdf/Bose_1801_Power_Amplifier.pdf



Other interesting magazine articles:
Studio Sound
http://www.americanradiohistory.com/Archive-Studio-Sound/70s/Studio-Sound-1974-06.pdf see review on page 56
http://www.americanradiohistory.com/Archive-Studio-Sound/70s/Studio-Sound-1974-10.pdf see page 24 letter to the editor
Popular Electronics
http://www.americanradiohistory.com/Archive-Poptronics/70s/1973/Poptronics-1973-08.pdf see page 23
Audio
http://www.americanradiohistory.com/Archive-Audio/70s/Audio-1974-01.pdf see page 6

High Fidelity
November 1973 review of Bose 1801 power amplifier "Bose's Controversial Amplifier How Good Is It?" (no link) starts on page 28
NOTE: A complete copy is currently available on ebay for $24.99 (ouch)
or just the clipped pages with a starting bid at $2.99 http://www.ebay.com/itm/Bose-1801-a...034-High-Fidelity-034-magazine-/332205839640?


HiFi Stereophonie (Germany) 1973 Issue 07, Issue 08 and Issue 09. Issue 10, 11, 12 had full page advertisements.
(no links)



A color ad for the Bose 1801 which appeared in Audio magazine October 1975
http://www.americanradiohistory.com/Archive-Audio/70s/Audio-1975-10.pdf see page 85

A B&W ad for the Bose 1801 which appeared in Audio magazine October 1973
http://www.americanradiohistory.com/Archive-Audio/70s/Audio-1973-10.pdf see page 90(?) or last page of this scan


Audio magazine February 1974 issue
http://www.americanradiohistory.com/Archive-Audio/70s/Audio-1974-02.pdf
"Thermal Design of a High Power Amplifier" by J. L. Veranth (works for Bose Corporation) talks about the Bose 1801 see page 24
NOTE: Joseph (Joe) L. Veranth later became the Vice President of Research and Development at Bose. https://www.facebook.com/joe.veranth
as a side note: "High Voltage Amplifier Design" by James Bongiorno (Director of Engineering for SAE at the time) starts on page 30

Audio magazine July 1973
Bose ad "Behind It All" shows pictures of 15 engineers who worked at Bose including Joe Veranth. Twelve of them were M.I.T. graduates.
http://www.americanradiohistory.com/Archive-Audio/70s/Audio-1973-07.pdf (see the last page of the scanned document.)


By the way, my son Josh did some work for Bose a few years ago while he was getting his BSEE from Georgia Tech. All he got out of it was some Bose headphones.

Ed