I have been going through the push pull stage as power amplifier. Even though the gain in this topology is less than 1, still people use it. I am assuming this is because in emitter-follower OR source-follower topology the input impedance is high and output impedance is low, that is why we are using these stages as power amplifiers.
BUT, operational amplifiers also depict the same characteristics, and hence I believe can be used as power amplifiers.
So why the book does not discuss op-amp as power amplifiers? Does op-amp lack something to act as power amplifier?
Can anyone be kind enough to throw some light in the above thinking.