I realize this is a bit old but I tried out a Perseus and it was just way too glitchy for my tastes. I could get some decent tones out of it but it was really only useful in the upper register. I read later that even on guitar it has trouble below the fifth fret on the E. I ended up selling it and picking up a Recovery Couple Skate which is currently my favorite pedal. A really warm fuzz and it tracks well all over the neck. Best octave down fuzz by far!