Please note these are open box B-stock units. All B-Stock speakers have been inspected by our warehouse and are in excellent working condition. Some may have small cosmetic flaws or damaged outer boxes. All B-Stock speakers come with a full warranty The Classic 3.0 shelf loudspeaker is an entry-level model of the series. Its relatively large membrane area and the enormous stroke of the bass chassis, combined with the rigid cabinet, enable an exceptionally transparent midrange reproduction, as well as forceful and boom-free bass reproduction. The AMT-1 air motion ribbon tweeter provides brilliant high frequency sound.