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Actually difference between class A and AB?

Class A amp sounds like holy grail of HIFI world.
But class A amp are much heavier, more expensive and rarer than class AB or class B design. Few can afford 100 LB weight of a 2-channel 100w/c amp.

Is there any actual difference between class A and class AB when listening to actual music? And what is that difference?
hl10027

Showing 1 response by liguy

liguy
228 posts
 
Athmosphere,

Not quite, the nomenclature A/AB simply denotes that the amplifier operates in Class A up to a certain power level then switches over to Class B. This switch point is determined by the bias.

http://www.passlabs.com/pdfs/articles/leaving_class_a.pdf
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