DDJ S1 high/low-pass filter

Hi,

I've one question about the DDJ S1. It has everything I need, except for one thing: the high/low-pass filter (knob, like the DDJ T1).

I thought that wouldn't be a problem and would be a matter of remapping another knob I don't need. But Serato Itch doesn't seem to have a high/low-pass filter built in, except for the easter egg thingy, which I don't consider as an option.

Anyone experiences the same problem and found a solution for this?

Thanks in advance,

Harry