Sadly, I can tell you that Zender's own signature ashdown pedal did not cut it. The Funk Face, basically a Bassballs with a separate footswitch for the distortion part, which both uses a real tube and can be put before or after the filter in the chain, which i thought would be awesome. But the filters themselves are just at too high a frequency, and don't do an appreciable amount of mangling your bass at all. Ashdown told me there is no way to adjust either, the way one would a bassballs via the trimpots. Bummer for a $250 pedal that looks like it'd be just what the doc ordered.