In my efforts to match the levels of my basses, I figured it would make more sense just to put some kind of volume control as the first item in my effects chain. So my question is would you prefer a clean boost, or passive volume attenuation to accomplish this? It might or might not be notable that certain effects like my envelope filter and overdrive do not sound good with my P bass, which is louder than my jazz. For this reason, my first inclination is leaning towards a passive cut on the P bass. I understand my thinking might be completely off on this, so please set me straight if this is the case.