Boss ME-50B Bass Multi Effects Floor bass multi-effects processor with super easy, knob-based controls Killer COSM Compressor/Limiter and Drive effects, plus T-Wah, Slow Gear, Defretter, and much more Innovative Sound Hold function sustains a low note while playing over it Sound-on-sound recording with new Kick Drum effect for keeping time Dedicated knobs for each effect sectionno menu-surfing! Easy Tone effects with preset EQ templates for quick tone editing 3 footswitches and onboard expression pedal for easy realtime contr