A power amplifier that employs a pair of transistors that are connected in push-pull and driven to act as a switch, and a series-tuned output filter, which allows only the fundamental-frequency component of the resultant square wave to reach the load. These amplifiers are highly efficient. However, because of this, they are also regarded as having poor soundquality.

These amplifiers are usually 85% efficient.
Created by , 10-21-2009 at 03:46 PM
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