Up for sale is my TC Electronic Corona Chorus. This one has been on my pedalboard for a few years, but I'm no longer performing, so I don't really need it anymore. There are no remnants of velcro on the bottom. I used this on a HoleyBoard so it was mounted using a tie wrap. This left the bottom clean from any adhesive residue. Sale includes the original box, paperwork and USB cable. The only thing I don't have, is the stick on rubber feet. Those don't last very long on a gigging pedal board. Please see pics for details. Everything works as expected.