I have the following circuit design of a Class AB Amplifier which amplifies the input voltage with a voltage gain of around 42. However, I'm wanting to increase that gain to around 80. Does anyone have any tips or advice on how to do so? I've been trying to change the component values of the resistors to increase the gain however this either doesn't have an effect or distorts the signal. I've also tried making modifications to the circuit design but have so far had no luck.
Any advice would be appreciated!