The Xotic Bass BB Preamp is the bass version of Xotic's infamous distortion / booster guitar pedal; the BB Preamp. Like it's sibling, the Bass BB Preamp has an easy four knob design and simple to use. the Gain, Treble, Bass and volume will get you where you want, they also react to every small tweak which means you can pretty much set your sound spot on.
There is no question about how sturdy and handy the Xotic Bass BB Preamp is, it's built like a tank and the fact it is such a common pedal on bassists' pedal boards speaks for itself. Also worth mentioning, it is fully analog and has a true bypass on/off switch.
Xotic promote the Bass BB Preamp using the sentence "add some muscle to your bass tone" - we pretty much agree.