The BOSS ME-50B puts world-class bass effects in a rugged floor unit with simple pedal-style control. Effects on the ME-50B are divided into six sections - Compressor/Limiter, Master, Filter/Tone, Drive/Synth, Delay/Modulation and Expression Pedal-giving bassists a range of one-of-a-kind and rocking BOSS tones including new effects like Sound Hold, Octave Up and Kick Drum. From there, ME-50B effects can be edited using 23 knobs and controlled via three built-in footswitches and an assignable expression pedal. The ME-50B from BOSS is the piece no bass player should be without!