Okay, so I've been belting out some vocals with my band for a while now and I'm starting to get a bit keen on the idea of some vocal effects (particularly distortion and delay, as cliche'd as I am). I recently went out and brought a BOSS 'Metal Zone' pedal in the mistaken belief that I could run a mic through it to the P.A and stomp on it for some grit on my vocals. WRONG! The bloody thing feeds back intolerably if you push the distortion or the level to any kind of hear-able levels. Even cracking down on the treble control doesn't help. I was wondering if anybody out there has messed around with this kind of thing? Are there specific stomp boxes (I'm not interested in a processor, as everyone I've met sounds like digital arse or has no bypass function) made for this kind of thing? Is it possible for me to use the one I already have? I thought I might have hooked it up with the wrong kind of leads or something (cannon to quarter inch from the mic into the stomp box, quarter inch to quarter inch from the stomp box into the mixer). Thanks for any forthcoming insight.