+1 for the Blower Box at low gain. Huge Idiotbox fan here, but I really don't like that pedal with the gain knob anywhere past 11 o clock. But at low gain settings, that pedal is very special. I actually think that Matt's pedals that aren't marketed for bass are his best bass dirts, particularly the D4, Static Fuzz and the Swanson.I think it sounds best at low gain, played with a pick, I can't stand the Blower Box with the gain above 11 o'clock (I have the original one, which doesn't sound the same as the newer smaller one with the knobs at the same positions).