depends on the band/gig, but if we're counting a tuner, then I always have at least one pedal, most ive had on a bass rig was 5-6 and they all got used in a standard 45 minutes alt country/americana set. tuner, compressor (always on), Octave, OD, fuzz, flanger. last project didnt get out of rehearsal, but that was all dry tube head and big cab for slightly crunchy goodness.