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Old 28th March 2006, 01:23 AM   #1
Leolabs is offline Leolabs  Malaysia
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Question 2 stage power amp

Have search for a while,but found that now much people or manufacturer(except Avantgarde) use it,why???

And anyone here interested in it???
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Old 28th March 2006, 10:45 AM   #2
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Much people use it? Do you have drawing of it?
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Old 28th March 2006, 03:26 PM   #3
sreten is offline sreten  United Kingdom
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the JLH class A is an example of a 2 stage design.

They are difficult to work with when not in class A
due to the combined phase splitter and gain stage.

Setting the bias for high power class aB is difficult.
Note that JLH reverts to a 3 stage topology for
the class aB version of the above amplifier.

The lack of popularity of 2 stage amps is that 3 stage
amplifiers are much easier to design and technically
have better performance than 2 stage designs.

/sreten.
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Old 29th March 2006, 01:48 AM   #4
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Actually it was"not much" rather than "now much",sorry about my poor english
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