As stated in the opamp design I would expect the output to be 100 with the load set at 10 times the R1. What happened? Remember the opamp is capable of a gain of 100,000. The transistor is limited to a much lower gain. R3 is setting the base current which in turn sets the gain so we need a little more consideration in the component values.
Here we see the frequency response for the circuit. Adjusting the capacitors will give the response we need.
What can you deduce from this series?
Can we adjust the input Z by adjusting R2?
Can we adjust the output Z by adjusting R3?
A low Z circuit is high current and a high Z circuit is low current. Can we design the circuit to be voltage or power gain? For voltage gain would you want high or low Z?