Simetrix4 dummy questions

[chris ma]

I tried the tutorials without much success to use Simetrix. All I can do so far is to run sims to adjust and set the Iq cuurent and to obtain the near zero DC offset. But in order to see if the circuit is performing well or not, things like, what kind of gain, what output power, frequency response, is it noisy etc etc...

Please see the attached graph that I blindly ran, can anyone tell me what are those numbers telling me?

Thanks for your effort,
Chris

 

[chris ma]

schematic

here is the amp I am trying

 

[chris ma]

more questions

In the above schematic, what is the function of R6 and C3, if R6 were to be increased or decreased, what effect it would have?

I know only R7 as the feedback resistor and increase/decrease its value changes the amount of feedback.

Thanks,
Chris