"The MXR M83 Bass Chorus Deluxe pedal. The Bass Chorus Deluxe features top-mounted Flanger and X-Over buttons with LED status indicators. In X-Over Mode, modulation in low frequencies is decreased at 100Hz perfect for playing upper register chords, melodies and fills while keeping the low end in tune. With Bass and Treble controls you can cut or boost lows and highs and shape the tonal character of the effect." -MXR 

This pedal is in great shape. There is a large strip of velcro on the back. It sounds awesome! Super lush mod tone and the crossover button helps a ton in the low end department! Get your Smiths on with this shiny blue box.