Sometimes it's a product that a customer had, got damaged, then the shop/manufacturer repaired it. I don't have a prob with refurb/remanufactured amps as long as that is disclosed beforehand, but I'd never buy a refurbed sub. Plus, a refurbed/remanufactured product should be at least 25-33% less than the original price that retailer/store is asking for the same product new.