Selling as used but it is well kept. The BOSS ME-20B represents the latest generation of multi-effects pedals from a leader in guitar and bass processing. Designed and optimized for live performance, the ME-20B is built tough to handle the rigors of the road, and is packed with a ton of great-sounding BOSS effects. The ME-20B provides world-class Synth, Octave, Defretter, and more. A Bass Enhance function provides an instant presence boost and there’s an EZ Edit for quick sound creation. The ME-20B is perfect for gigging bassists!