a method and apparatus for linear amplification of a modulated carrier signal or multi - carrier signal is disclosed . the linearity of the amplifier is improved by employing dynamic load line adjustments . a second current source coupled to the amplifier output load is turned on just before the amplifier reaches a nonlinear regime and reduces the effective load to prevent the amplifier allowing sufficient power to reach the nonlinear regime near saturation . the technique is particularly advantageous for amplification of a signal with large peak to average ratio .