Functionality has been confirmed. It's very clear and boosts the sound without damaging the original tone. It also supports 18V for a wider headroom. I think it's a pedal similar to the Analogman Prince of Tone. There are no noticeable scratches or stains, but please understand that it is a used item. Thank you. Multi-function overdrive pedal, with OD, BOOST, and DIST settings. - Model Name: Duke of Tone - Brand: MXR - Functions: OD, BOOST, DIST - Color: Purple - Included Items: Quick guide, box Thank you for viewing.