Abstract: A broadband, high speed, signal inverting video amplifier comprises a generally conventional, main cascode amplifier and first and second current boosting cascode amplifiers means which are capacitively coupled to the main cascode amplifier. The first current boosting amplifier provides a positive current spike in response to an input video signal abruptly decreasing, the positive current spike provided thereby being fed into the main cascode amplifier in a manner causing the current spike to be added to current through the main amplifier when the amplified video signal goes positive. The second current boosting amplifier provides a negative current spike in response to the input video signal abruptly increasing, the negative current spike provided thereby being fed into the main cascode amplifier in a manner causing the such current spike to be substracted from the current through the main amplifier when the amplified video signal goes negative.