In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The BOSS ME-50B puts world-class bass effects in a rugged floor unit with easy pedal-style control. Effects are divided into six sectionsCompressor/Limiter, Master, Filter/Tone, Drive/Synth, Delay/Modulation and Expression Pedalgiving bassists a range of unique and powerful tones including new effects like Sound Hold, Octave Up and Kick Drum. Effects can be edited using 23 knobs and controlled via three built-in footswitches and an assignable expression pedal.