So the idea behind the "Dyna" label is that the pedal puts out the drive in relation to the intensity of your pick, i.e. you play hard, it gives you lots of drive; you play soft, it comes through clearer. It kinda works like that, but not as extreme as you might expect. It also doesn't put out great drive; it's really lacking in the highs. It's alright, but I think that the OS-2 or SD-1 might have been a better choice.