This is an unused Yamaha natural AB receiver. Model rx-b659. The receiver has never been used. We powered it up and it does work. There are multiple different cords that go with this. The remote control is still sealed in the original plastic bag with batteries and other cables. This is huge. It's 17x15x7 in tall cosmetically. It is in perfect condition with nowhere at all. Please see the photos. This does not have the original box but it was never used. I don't really know what else to say about this. It is serial number. Why? 7417-16xxz. From a non-smoking home