comp ... and some dirt ... but I look for something with a " blend " knob of somekind , so you can keep Your tone intact ... I recently sold my B7K and Wampler EGO ... both where very nice nice , but all I wanted was a tiny bit of dirt/grind/tubeness and minimal comp ... so right now I fiddling around with the latest 'Visual Sound Rt66 V3' ... comp / dirt 2 pedals in 1 ... dry mix ( blend - both sides ) tone controls / bass ... and a noise gate if needed ... I'm usually looking for pedals that will be OK for bass and gtr ...