Can someone explain class A vs AB?

[J-Nick]

More amp questions...

Has I read about different amps I see this class A or class A/B designation all the time. What does it mean? what is the difference between the two?

Thanks for the info

 

[mbgreene]

There's interesting reading explaining the whole class A / AB issue on mesa-boogie website.

Try here

http://www.mesaboogie.com/US/Smith/ClassA-WebVersion.htm