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nicolas888 18th April 2006 05:40 PM

Krell KSA 50
I am on the way to built a
JLH Class-A 40Watts amplifier :rolleyes:

after built the JLH Class-A 10Watts first version (1969).

I saw a lot of post about the Krell KSA 50 so I am wondering if there is a different between this 2 class A implifier.

Did someone built both ?

Anybody have a felling about that ?

Thank you.

AndrewT 19th April 2006 08:52 AM

the Krell is a push pull ClassA design.

The JLH is a single ended ClassA design with a current sink that is not quite constant (sort of tracking with signal level).

I would expect them to sound quite different.

Each has it's own adherents.

I am a bit of a JLH fan even though I have never built any of his circuits. He wrote very clearly and is relatively easy to understand.

nicolas888 19th April 2006 03:31 PM

Thank for your answer Andrew

I guess the best way is to build 1 of each.

I also noticed the 'killer amp' on the forum wich will be my third one.
Anybody have other informations ?


Leolabs 19th April 2006 03:41 PM

Class A design too???

nicolas888 20th April 2006 05:31 PM

killer amp can be class A and AB.
Not competly sure but almost sure..

I am sure the JLH Class-A 40Watts amplifier will be good , after I don't know for the 2 others ones.

jacco vermeulen 20th April 2006 05:38 PM

il y a aussi le PLH.

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