BOSS BC-1X Bass Comp This is a compressor for bass. I purchased it new in October 2018. I used it for live performances for about two years after that, but I think there are almost no noticeable stains or scratches on the main unit. Velcro is attached to the back to fix it to a board. I am selling it because I no longer have the opportunity to use it. Operation has been confirmed. Comes with the original box and instruction manual.