is this an overdrive or some other effect?? just wondering thanks.
It's supposed to be like a cranked Plexi but with more gain in a box. More of a distortion then an OD but could be used for both.
It's a distortion pedal. It's supposed to sound like a cranked JCM800. Not a bad pedal for the price.
oo ok, so it would just replace my amps sound?
You'd use it on your amps clean channel. It'll make your Vox sound more like a Marshall. Not saying it's going to sound amazing or not, that's up to you.
but could it be used just to boost the overdrive on my amp?? without replacing the sound/tone of it?
It could, but you'd be better off getting an OD pedal. If you want a transparent boost that's very similar to a Tubescreamer without the mid-hump, look into the BBE Green Screamer.