Audio amplifier which uses a potentiometer with an op-amp to control volume output of an 8 ohm speaker. The setup uses a push-pull BJT transistor setup to provide the necessary current for the speaker. Each push pull BJT is connected to a current source, this always keeps them on and eliminates the distortion from the need BJT turn on voltage at each base, as well as keeps the signal swing centered around ground at 0V.
