Wireless subs are a type of powered subwoofer that communicate with their audio source via Bluetooth or Wi-Fi and are usually found in pairs with soundbars. While they offer the convenience of fewer cables (one less in most cases), they can cost quite a bit more for that luxury and often operate within a closed ecosystem. This means that the wireless sub will only work with certain speakers making an upgrade path rather difficult. Unless necessary, we usually recommend wired subs over their wireless variety.