How do I control input and output impedance?

[Rob Strand]

So, do you suggest to implement less scientific practices like estimating impedance by blending salamander blood via our lucky rabbit's foot under full moonlight (3rd movement)..??

No, but sometimes the equations grow so large it might be quicker waiting for that method to work  .

[screamersusa]

Let me ask an ignorant question here...
In the BOR SHO type circuits the tone stack follows a 1uf decoupling cap only.
So what input z or source value do I use in tsc?

[antonis]

So, are we playing ping-pong..??
https://www.diystompboxes.com/smfforum/index.php?topic=129266.0

Once again, could you plz post a schematic of particular circuit of your interest..??
Decoupling caps are far away from been considered "drivers"..
What we need to know is the stage exactly before 1μF cap..!!

[screamersusa]

No not playing ping pong, I was trying to be respectful.  I'll try to delete the other post if I can.
I wrongfully assumed people here were familiar with the sho type circuits.

[antonis]

5k1 should be considered as tonestack driver output impedance..

P.S.
Despite people's familiarization, it's always more polite (and convenient) to post a visual reference of whatever you refer on..