just as you would imagine, circuits have an "in" and an "out". a lot of the difference in bass pedals vs. guitar pedals, has to do with the "size" of the capacitor, usually one at each the in and out of the circuit. you can think of it as; "a bigger cap allows a wider range (more lows) through than for guitar (where a narrow range is desired)". i'll leave it at that. go have fun. -Dash
Awesome. You da man (except you're not a man).

