I'm suprised it got this far before someone said this. Only thing is that 'bass knob' can also include the ones that boost at around 45hz, not just the gain cut ones. In the case of the bass boost knobs you just set the gains at the boost center frequency with the knob at max, so as long as you know how to set gains properly and know what type of knob you have (lol, that's what she said) it doesn't matter.