I've been playing with this thing for about a month and I've been nothing but stoked to be using one. It is reactive when you play it, meaning that you have to play pretty soft for some of the really low notes to shine through. I tend to just boost almost everything and get a huge sub sound that rattles the walls. I highly recommend this pedal to any bass player. You'll finally be able to get that low sub sound you've always wanted to get.