The Boss LMB-3 is a Limiter/Enhancer specially made for the bass guitar. With this single effect pedal, you can easily control the dynamic range of the bass guitar. This does the pedal in the form of compression. This allows you to make the sound fuller and give more energy to the sound, the brightness can be set with the enhancer. The Boss LMB-3 has 4 dials, Level, Enhance, Ratio and Threshold that make it easy to set the right sound.