LPA amp 1-20Mhz

At present, we can see that the waveform is basically distortion-free at 500hz
How do I need to modify the principle in the diagram to achieve 1-20mhz
Vcc=100 V vi=98 V RL=8.1 Ω
High voltage PNP type triode 2SA1968
General PNP type triode 2SA1013
High voltage NPN type triode BUT11A
General NPN type triode 2SC2328
Standard IGBT FF200R12KT4
 

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