ok, that makes a lot of sense! That is also an incredible idea. I'll make sure to keep that in mindYes, in passive mode the treble knob controls the tone. 0% is fully off, 50% (centre detent) is fully on, 50% to 100% doesn't make any difference.
This means that active mode and passive mode will sound almost the same with the treble knob between 0% and 50%.
It also means you can set the treble and bass knobs above 50% and then switch from passive to active to instantly dial in a scooped slap tone.