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Old 26th June 2009, 02:18 PM   #1
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Default URL Collection of Commercial Single Ended Integrated and Power Amplifier Devices

URL Collection of Commercial Single Ended Integrated and Power Amplifier Devices

After read the article "Single Ended Class A" from Nelson Pass about www.firstwatt.com/downloads/seclassa.pdf and after simulation and test of a wide range of different circuit designs I hate the so called "True Complementary" circuit designs for output power stage, because the true complementary power transistor pair is for me a mythos resp. a tall story. The perfect symmetric character exist in the mind of most well-known famous designers so as on the schematic diagrams, but not in real life; both by BjTs and MOSFETs. Nevertheless - unfortunately most of the audio amplifier designs are make in this kind (or I find designs with output tubes).
Therefore the follow URL collection of all commercial amplifiers with output circuit solid state designs without the so called "True Complementary". I have found all listed URLs below on the web in the last years.

If URL already death, please use http://www.archive.org/web/web.php and copy this death link about right click.You get a chronology overvview. At second step you choise the wanted date of the archived webstite. For example:
www.passlabs.com - copy in http://www.archive.org/web/web.php - click on "Apr.06.1997" and you see the website from "Daddy Pass" in the Aleph aera 12 years ago.
(http://web.archive.org/web/199704061...m/products.htm)

SE versions with very high idle current (> 4A) and low output power (arround 5W) especially for high quality tweeter drive (e. g. SA8535 from Stage Accompany) in bi-amping systems, I found nothing.

I hope, for some members this list offer a good overview. It is very hard to find such overview on other places in the web, because the most designs of amplifiers - as mentioned earlier - based of complementary transistor pairs.
If not, I have to do in most cases with tube (valve) output power stages.

Perhaps some members know about additional interesting URLs from commercial brands.
Please excuse my not perfect english - I work with the language tools by google.


BEAR Labs "SE-MOSFET"
http://www.bearlabsusa.com/
http://web.archive.org/web/200606200...Mosfet-B&W.JPG
bluecircle "BC-2"
http://www.soundstage.com/das_bc2.htm (Test blue circle BC-2 foto in Soundstage 1/97)
Buscher (Modul, Gain stage + POWER SE AMP)
http://www.buscher-endstufen.de/
Greenwall "Julio" and "Small One"
http://web.archive.org/web/*/http://...e/de/julio.htm (Audiophile 1/2001)
http://web.archive.org/web/*/http://...e/smallone.htm (Image-Hifi 6/97)
INnovative Audio "Ultrapath"
http://www.innovative-audio.de/ Single Ended Mono Poweramplifier
http://www.innovative-audio.de/produ...aktmonoend.htm
Marchand "EC 616"

http://www.marchandelec.com/ec616.html
http://www.tnt-audio.com/ampli/march_ec626_e.html
passlabs (wide range of SE Versions)
(Nelson Pass, X-Series, XA-Series, AlephO Series, Aleph-Series and "First Watt")
www.passlabs.com und www.passdiy.com
Paravicini "M 100 A" (SE + Transformer)
M100A, M100 A, M 100A (Test in Image-HiFi, 4/2001)
http://www.envogue-24.de/Neue%20Seiten/ear/M100A.html
http://www.hometheaterreview.com/equ...ewed002186.php
Pathos "TT" ("Twin Tower", SE Sourcef. + Inductor)
Model TT (Twin Towers) Integrated Amplifier SE
http://www.pathosacoustics.com/twineng.htm
http://www.highend.cz/productpages/p...oluteSound.pdf
Sudgen A21SE Series
SE = "Single ended" not "Special Edition" Test in Image HiFi 3/2007
http://www.sugdenaudio.com/range/overview3.htm
http://www.roksan.de/productsites/ma...den/sugmus.pdf
http://www.soultosoleaudio.com/pdf/S...ber%202007.pdf
Valvet E1
http://www.valvet.de/bricks/e1/ (Test in "Hörerlebnis" Nr. 61)
http://www.valvet.de/presse/
http://www.highend-electronics.com/16.html
http://www.audiogon.com/cgi-bin/cls....ran&1249765888
Ypsilon "VS 100" "YS 100"
http://www.amadeus-audio.co.uk/ypsilon/vs-100.htm (VS-100 YS-100)
http://www.amadeus-audio.co.uk/ypsilon.html (Übersicht)
royaldevice "BLU BAY" (driver transf. + SEPP Power-Amp)
http://www.royaldevice.com/BluBayEng.htm
http://www.royaldevice.com/BEmeasures.htm
http://www.royaldevice.com/BEschemaeng.jpg
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Old 14th December 2009, 07:20 PM   #2
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Are there news about currently solid state single ended power amplifier?
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Old 14th December 2009, 07:28 PM   #3
Bone is offline Bone  United Kingdom
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It would be nice if these links led directly to the schematics of the amplifiers so that a comparison could be made.
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Old 14th December 2009, 07:48 PM   #4
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Quote:
Originally Posted by Bone View Post
It would be nice if these links led directly to the schematics of the amplifiers so that a comparison could be made.
I think so, too, but unfortunately the most commercial brands don't release their circuit diagrams/schematics.
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Old 20th December 2009, 07:55 PM   #5
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Are there news about currently solid state single ended power amplifier brands?
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Old 20th December 2009, 10:58 PM   #6
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Old 21st December 2009, 12:19 AM   #7
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Quote:
Originally Posted by Rafael L View Post
georgea
Sorry my niece typed at PC
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Old 21st December 2009, 01:53 AM   #8
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Quote:
Originally Posted by tiefbassuebertr View Post
Are there news about currently solid state single ended power amplifier brands?
It's a pretty thin category.

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Old 11th May 2011, 08:58 AM   #9
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Quote:
Originally Posted by tiefbassuebertr View Post
Are there news about currently solid state single ended power amplifier brands?
there are several new additional kit suppliers, but where are the commercial brands of such amplifiers?
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Old 16th May 2011, 04:45 PM   #10
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A new power amplifier from Reimyo:
model KAP-777
perhaps a "Single Ended" classA
about
REIMYO KAP-777 Power Amplifire
I read
It’s a unique Single Mos FET driven power amplifier
Perhaps Class-G with Single Ended Class-A main part (see data for output power)?
Who knows more?
Attached Images
File Type: jpg Reimyo KAP 777-front.jpg (307.2 KB, 618 views)
File Type: jpg Reimyo KAP 777-rear.jpg (204.6 KB, 601 views)
File Type: jpg Reimyo KAP 777-open top view.jpg (196.1 KB, 588 views)
File Type: jpg Reimyo KAP 777-open top view Rifa caps.jpg (213.5 KB, 580 views)

Last edited by tiefbassuebertr; 16th May 2011 at 04:53 PM.
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