It does not come with a power adapter when you buy these new. It takes 6 AA Batteries and works well this way, or you can get a power adapter for it as Most of BOSS Pedals all use the same power adapter... Kind like Apple now days.. the over price rip off weasels they are.. A darn iPhone with tax and the activation fee, your cost is around $1,750 In 10 months they mite give you $500 towards trade in on the next.. You don't get a power cord or adapter.. and of coarse your phone bill just has to go up. Yes I have a iPhone.. I never said I was smart!