I saw that video a while ago. As a Digitakt user, I wondered which settings might help me to get a 50Hz/100Hz low-cut. I tried using a 100Hz sine and played with the base parameter of the 2nd filter to locate the right settings. Unfortunately, the rolloff doesn’t seems to be very steep. I think the 100Hz sine started to progressively dissapear somewhere between 50 and 70 (filter base settings).
Is there a chart somewhere with the exact frequencies & rolloff ?