The BOSS ME-20 is a powerful multi-effects unit optimized for live performance, offering a range of effects including overdrive, distortion, delay, chorus, phaser, flanger, tremolo, rotary, and EQ. Known for its user-friendly interface, the ME-20 allows guitarists to easily select and tweak effects, making it a great choice for both beginners and experienced players. The unit features a robust metal chassis that can withstand the rigors of the road, and is equipped with a built-in expression pedal for volume or wah effects. Additionally, it includes the EZ Edit feature for quick sound creation and up to 30 user memory locations for saving custom patches. The ME-20 runs on battery or AC power, making it highly portable and convenient for musicians on the go.