Force, This is a guitar pedal. There are very few bass specific drive pedals out there. Many of them still exhibit low end loss when engaged. A notable exception is the Frantone Lo-Tone which is a fuzz. It boosts the lows starting @ 150 (those boomy freqs). The trade off is it can get muddy unless you back off on the bass knob on your axe or amp. Some folks also like the Fulltone Bass Drive.