An amplifier system (200B, 200C) for providing an output signal to a load, the system comprising: an amplifier including a first transistor having a drain terminal and a gate terminal, wherein the first transistor is constructed to receive an input signal at the gate terminal, to amplify the input signal as an amplified input signal and to provide the output signal to the load at the drain terminal as the amplified input signal; the amplifier further including a second transistor coupled in series with the first transistor with a direct connection either to the drain or to the source of the first transistor, and having a gate terminal; the amplifier system (200B, 200C) further comprising: a current sensing circuit including a current sense resistance coupled in series to the first transistor via the drain terminal of the first transistor and constructed to measure a magnitude of a current in the first transistor; a feedback circuit coupled to the current sensing circuit and constructed to generate a feedback signal indicative of whether the magnitude of the current in the first transistor is above a threshold; and a driver circuit coupled to the feedback circuit and the gate terminal of each of the first and second transistors, the driver circuit constructed to apply a voltage to the gate terminal of the first transistor and reduce the magnitude of the current in the first transistor by adjusting a gate voltage of the second transistor responsive to the feedback signal indicating that the magnitude of the current in the first transistor is above the threshold. an amplifier including a first transistor having a drain terminal and a gate terminal, wherein the first transistor is constructed to receive an input signal at the gate terminal, to amplify the input signal as an amplified input signal and to provide the output signal to the load at the drain terminal as the amplified input signal; the amplifier further including a second transistor coupled in series with the first transistor with a direct connection either to the drain or to the source of the first transistor, and having a gate terminal; the amplifier system (200B, 200C) further comprising: a current sensing circuit including a current sense resistance coupled in series to the first transistor via the drain terminal of the first transistor and constructed to measure a magnitude of a current in the first transistor; a feedback circuit coupled to the current sensing circuit and constructed to generate a feedback signal indicative of whether the magnitude of the current in the first transistor is above a threshold; and a driver circuit coupled to the feedback circuit and the gate terminal of each of the first and second transistors, the driver circuit constructed to apply a voltage to the gate terminal of the first transistor and reduce the magnitude of the current in the first transistor by adjusting a gate voltage of the second transistor responsive to the feedback signal indicating that the magnitude of the current in the first transistor is above the threshold. a current sensing circuit including a current sense resistance coupled in series to the first transistor via the drain terminal of the first transistor and constructed to measure a magnitude of a current in the first transistor; a feedback circuit coupled to the current sensing circuit and constructed to generate a feedback signal indicative of whether the magnitude of the current in the first transistor is above a threshold; and a driver circuit coupled to the feedback circuit and the gate terminal of each of the first and second transistors, the driver circuit constructed to apply a voltage to the gate terminal of the first transistor and reduce the magnitude of the current in the first transistor by adjusting a gate voltage of the second transistor responsive to the feedback signal indicating that the magnitude of the current in the first transistor is above the threshold.