Amazon is running a promotion that gives Prime members with an Amazon Visa or Amazon Store Card an extra 20% cashback on select items. Among the 3,000 qualifying items are three different Sony Sound Bars that are already on sale, making them a great deal when combined with the cashback promotion. The Sony CT290 Sound Bar is $118.40 when you factor in the 20% cashback that will automatically appear on your statement. That’s down from a list price of $279.99. The Sony HT-MT300 Mini Sound Bar is $158.40 with cashback, which is down from a list price of $348.00. Lastly, the top model, is the Sony CT800 Sound Bar for $238.40 with cashback. That model has a list price of $499.99. All three of these sound bars come with a wireless subwoofer and are new 2017 models.