The MIMIQ DOUBLER is a guitar effect pedal that layers your guitar sound, with three knobs for tone adjustment. I purchased it used. I'm selling it because I don't use it much anymore. LED: Red No issues with sound or crackling; works perfectly. Box included. No manual, as it didn't come with one originally. It's in clean condition with no noticeable scratches or dirt from the time of purchase, and no velcro attached. - Brand: tc electronic - Model Name: MIMIQ DOUBLER - Power: 9V DC/100mA - Features: true bypass - Number of knobs: 3 Thank you for looking.