Class B amplifiers are known for their inefficient utilization of the input signal and high output distortion. However, most amplifiers (including Class B amplifiers) do use a considerable amount of feedback to reduce the distortion at the output of the amplifier. This article's discussion only covers the common differences of the various classes of amplifiers, but a more in-depth review of the various classes of amplifiers would highlight the advantages and disadvantages of each class that may reflect the benefit of each class and methods used to improve the efficiency of each class or combined classes. We will try to address this in a future blog.