I am looking to buy an envelope filter for my bass. I am torn between two. I will link to both and people in the know can tell me what you think. Bass balls- http://www.adverts.ie/bass-effects/bass-balls/1445645 Q-tron- http://www.adverts.ie/bass-effects/qtron/1445614 I have never had the chance to play either. But have heard you have more control over the Q-tron. Sometimes a good thing, sometimes not. What do you guys think? I know there was already a topic for this. But these pedals look fairly older. And not sure if they are different to newer models.