A generator, comprising:a first class D amplifier configured to provide a first voltage raila second class D amplifier configured to provide a second voltage raila gain stage electrically disposed between the first voltage rail and the second voltage rail, wherein the gain stage includes an input and an outputa voltage source operably coupled to the gain stage input and configured to provide an input signal thereto responsive to a drive control signalat least one sensor configured to sense an operational parameter of the amplifier and to provide a sensor signal corresponding theretoa controller adapted to receive the at least one sensor signal and in response thereto provide the drive control signal to the voltage source andan amplifier output configured to supply an output voltage corresponding to the first voltage rail and the second voltage rail when the output of the gain stage falls between a voltage of the first voltage rail and a voltage of the second voltage rail and is configured to supply a peak voltage output when the voltage output is greater than the voltage of the first voltage rail or less than the voltage of the second voltage rail.
