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need some idea about Class A amp
need some idea about Class A amp
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Old 13th June 2008, 11:42 AM   #1
space2000 is offline space2000  Singapore
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Join Date: Mar 2008
Default need some idea about Class A amp

Hi all,

I just want to try to build as to have some idea for pure class-A amp before I make “Aleph-X 100w”.

Pls post me a pure simple Class A amp by using Anyone of this output transistor 2N3055 , 2sc5200, 2sc2922 or 2sk1058.

Thank you for your kindness.

Best regards
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Old 13th June 2008, 11:50 AM   #2
AndrewT is offline AndrewT  Scotland
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Location: Scottish Borders
look up the Pass site.
regards Andrew T.
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Old 13th June 2008, 12:12 PM   #3
sreten is offline sreten  United Kingdom
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Location: Brighton UK

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Old 13th June 2008, 01:44 PM   #4
lineup is offline lineup  Sweden
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Location: the north
Default Re: need some idea about Class A amp

Originally posted by space2000

I just want to try to build as to have some idea for pure class-A amp
... or 2SK1058.
Have look at this website.
ZenQuito is an interesting Amplifier

Preferably biased into Class A.
There are several variants, and in my opinion, they are Good Amps.

You will find several good topics. diyAudio members that have built ZenQuito, like:
Also notice that Mr. Plantefeve amps
have current feedback instead voltage feedback.
Both Zenquito and Buzquito (or Mosquito) can be biased to class A or AB.

ZenQuito .. at diyAudio.com
Or Search forum for ZenQuito


You should also check out the:
Hiraga Class A amplifier - The Monster (Le Monstre).
It is a classic and very well known amplifier
designed by a famous amplifier man: Jean Hiraga of France

Wasn't long ago we had a topic about this Great Amplifier.
I posted some myself:
Hiraga - "Le Monstre" amplifier

Lineup - regars
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Old 15th June 2008, 08:23 AM   #5
keantoken is offline keantoken  United States
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Join Date: Aug 2006
Location: Texas
This is a very good page on amplifiers. If you have a stereo bought from say, Walmart lying around, you might be able to use this page to 'step it up' and make it sound reaaaaaally good.

The schematic at the bottom is a class-AB design, but higher up he uses a class-A output stage.


- keantoken
The Kmultiplier rail filter! -=- The Simple Kuartlotron Superbuffer!
Need something built, repaired or modded? PM me and ask what I can do!
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