A system for and method of amplifying a modulated input signal can include separating the input signal into a first amplitude component signal and a first amplitude composite signal (e.g., an amplitude only component signal). The method further includes subtracting the first amplitude composite signal from the input signal to provide a difference signal. The method also includes amplifying the difference signal asymmetrically with respect to the first amplitude composite signal. The method can also include adding the difference signal and the first amplitude composite signal after asymmetric amplification. The power amplifier supply voltage can be powered as a function of the first amplitude component signal. The mathematical operations can be performed in the digital domain.