> dieter doepfer contacted me and pointed out that
> the early filters were designed in a way that no
> distortion can occour when using a100 signals.
> this behaviour can be changed by simply changing
> a resistor in the input stage. with this change
> the earlier filter models like a120 can also be
> overdriven, just like the a108.

Which resistor needs to be changed, from what value, to what value

I would very much like to experiment with my old a120.

Thankyou,

Julian