There are some minor signs of use. Nothing major. The pedal is in good used condition.
The new Trio+ incorporates a looper, so players can now loop their parts over the accompaniment and play along with them, as if there were two guitarists in the band. However, rather than develop an algorithm for a second guitar player, the looper allows guitarists to make his or her sidearm just as expressive as they are. In other words: YOU control just what the second guitarist plays, because you are that second guitarist.