Thank you so much for the reply, Kilrahi!
Since you ask, and since I am so new to the Helix, I do of course now become unsure and I will check again at first convenience, but I do feel that I did inspect the tools in that directory (filters) particularly carefully, since that's where a lopass filter should logically be found.
I'll have a look again, thanks.
Also, I've seen 3rd party amp packs, but no pedals? Else I could seek on that market too.