This is the JangleBox. It Jangles! Well, actually, by itself, even if you shake it, it doesn't make any sound. But plugged into a electric 12 string and its Jangle All The Way! No Velcro on bottem, and no power supply. I used it briefly on my board with a standard 9volt and it's good to go. Also takes battery(not included). Asking 150, shipped with the confines of the U.S. I will ship almost anywhere, just inquire what that may entail. Can't think of any trades I need. I am raising cash to feed my MAS. (Mandolin, mandocello, Mandola acquisition syndrome). Or an acoustic archtop. They are all rather silly in price these days.