Why is it that all of the vibe pedals I have played have such low volume? I've had a dejavibe, provibe, and a megavibe. It seems that all of these play very softly and the level is always dimed. I'm often finding myself wanting to turn the volume knob up a little more. Is there something wrong with my setup or is that just the nature of a vibe pedal? I want a vibe pedal that has a level knob that goes to "15".