definitely makes a difference
Very simple for me to use. I actually don't even put it on the floor...it's on all the time. It's especially effective going through the PA board direct as it seems to drastically cut down spikes, especially when I do the small amount of slapping I tend to use during our sets. Soundman actually came up to me after gig (not knowing what I was doing() and asked how much compression I was using as it sounded great using the same board settings as always for me. Right now the volume and effect (middle knob) seem to work well at around 1 o'clock. I don't use much of the sustain setting. Only critique is I don't really like the sound of the fuzz / grunge/ dirty know so I just leave it off.