Is there any difference between a wah and an envelope filter + expression pedal? Backstory: I have a sound in my head I'm trying to replicate. Actually it's really just a controlled EHX bass micro synth type sound. Closest stuff I've heard are Cliff Burton power wah type sound and some of the dub-steppy expression stuff. I've seen people mod the EHX and add a expression pedal, but that's not really where I want to go with this. From what I've heard the Dunlop 105q is close, but I'd like it to be a little more extreme if possible. Also, I'd like to switch on as few pedals as possible to get there.