The Boss ME-25 with its powerful BOSS features is very simple to use but will make you sound like an expert. With a built in sound library, this Boss octave guitar pedal provides you instant access to numerous classic and modern effects. Customize your sounds just by twisting the Drive, Tone, and Volume knobs of this Boss guitar effect pedal. With this Boss octave guitar pedal you will get 6 categories of sounds, with 10 sound variations in each category. The Super Stack loop in this Boss guitar effect pedal provides significantly heavy low-end and punch. The Boss ME-25 also acts as a USB audio interface to connect external devices. Enjoy crystal clear to crushing distortion sound with the Boss ME-25.