Hey everyone, As a practice amp in my room I have a crappy little Crate KX-15 keyboard amp. It's thin sounding, noisy, and has the headroom (or lack thereof) you'd expect from a 15 watt amp with an 8 inch speaker. When I push it beyond a little less than half way up, it starts to distort. It sounds terrible. It's a cool effect though, that I would like to be able to recreate through my nice-sounding Markbass/Eden rig for one or two of my band's tunes. What's the best pedal for this type of nasty distortion?