Triad’s flagship InRoom Platinum Sub offers spectacular performance at half the cost of some other 18 inch subwoofers–so you can buy two! Triad’s subwoofers offer the best in performance, value, and versatility, in a stunning new industrial design. With all new drivers, enclosures, and amplifiers, there is a Triad subwoofer for any application. Powerful SubAmp technology combines Class AB performance and near Class D efficiency with set-up and calibration features as recommended in CEA/CEDIA’s new state-of-the-art defining document CEB-22 “Home Theater Recommended Practice: Audio Design.”