Filter specs?

[mystran]

Have you tried using PluginDoctor to analyze the signal?

Its an instrument, not a FX.

In that case, what you think is a filter might not actually even be a filter in the traditional sense.

[Z1202]

Try dry/wet mix

Nothing change It also increase the whole signal, over the threshold (since the dry signal have not any wall to smash against). And the shape become more "smoothed" mixing signal+peak vs signal+peak+hardclip.

Should be somethings other...

Something doesn't add up. If you add that signal to a sawtooth you should get the one in your original picture (or similar).

[Derozer]

Try dry/wet mix

Nothing change It also increase the whole signal, over the threshold (since the dry signal have not any wall to smash against). And the shape become more "smoothed" mixing signal+peak vs signal+peak+hardclip.

Should be somethings other...

Something doesn't add up. If you add that signal to a sawtooth you should get the one in your original picture (or similar).

Ohh wow, that was the trick
I was summing saw with peak applied, not the "pure" saw.

Doing that, it starts to look very similar. Few differences on some ribbs, probably not a biquad, or some oversampling applied.

The discovering continue, and I'll return in case

Thanks to indicate this road: what a knowledge to reckon a chain by these screenshot!!! Big up!!