Comment 4 for bug 1581721

> I don't think it's possible to combine the LPF and HPF filters in this way because the goal of the Model1 is that the DJ can engage both filters at once to limit both the high and low frequencies.

Sure, but it would be nice to have a less-than-ideal option for controllers with only 3 knobs available than only make this style EQ available for controllers with 3 EQ knobs + filter knob.