what in god's name is a slow gear? i know it has something to do with volume. also, has anyone used an rdv5 with a bass? i want some reverb and am contemplating the purchase of one. now with the tremolo...i have a drummer that sways back and forth in time, and i'm afraid that would reak havoc on my delay/tremolo pedal. isn't a tremolo a type of pedal that requires a steady tempo or it sound off time?