Mini 2 used devices question

I don’t know where to place this, but I figure it will get moved to the right place after I finish. My nephew was pretty happy about playing around with my beat buddy, but doesn’t have enough money to buy it, however his dad said he would sponsor the mini 2, and the question he had is about the used devices that you sell. what type of examinations do the used ones go through to make sure that they are just as good as new?

Your question is probably best answered via direct contact with support@singularsound.com