I don't understand your simulation.
Where does "negative feedback" come from in the 2nd sim? Is there an off-circuit connection we can't see? It looks like you just removed the emitter capacitor. Please explain the feedback mechanism (in your simulation, not in general theory).
And while it looks reasonable, how did you come up with those distortion figures (40% and 3%)? Did you run a FFT analysis on both sims? or did you just look at the waveforms and guesstimate them?
Also, the voltage sources are different (25mV vs 460mV) by more than a factor of 10; why is that? shouldn't we be comparing apples to apples here?
Where does "negative feedback" come from in the 2nd sim? Is there an off-circuit connection we can't see? It looks like you just removed the emitter capacitor. Please explain the feedback mechanism (in your simulation, not in general theory).
And while it looks reasonable, how did you come up with those distortion figures (40% and 3%)? Did you run a FFT analysis on both sims? or did you just look at the waveforms and guesstimate them?
Also, the voltage sources are different (25mV vs 460mV) by more than a factor of 10; why is that? shouldn't we be comparing apples to apples here?