A millimeter (mm) wave power amplifier includes a plurality of amplifiers, each amplifier including an amplifying FET including a gate, drain and source. The mm wave power amplifier also includes an input port, an output port, a VDS port being connected to a VDS voltage source for setting the drain-source voltage of the FET, and a VGS port being connected to a VGS voltage source for setting the gate-source voltage of the FET. The output ports of the amplifiers are connected to a signal combiner and the input ports of the amplifiers are connected to a signal splitter. At least one of (a) at least two of the VGS ports are connected to different VGS voltage sources, and (b) at least two of the VDS ports are connected to different VDS voltage sources.