These are a pair of Zu Soul's Superfly edition (SN3 & 4). The early Superfly's do not have the engraving on the binding post plate on the back specifying Superfly. Zu 260RD/G4 is engraved on the phase plugs confirming the Superfly edition as confirmed on the data sheet. In very good condition. Includes original boxes, spikes for carpet and hard floors. I am not the original owner but these speakers have obviously been very well taken care of by me and previous owner(s). Note: Shipping dimensions and weight are per speaker.