< p> Maximum efficiency, from stock electrical systems, is the aim of the SS850. Coming in at over 850 Watts RMS under 1% THD, it can drive single, dual or even triple subs to high output levels. Sharing the same architecture as the other high speed, half bridge SS amplifiers, the over-spec power supply delivers the strong impact that low cost full bridge designs fall flat on.< br> < br> The new SS/SX amplifiers are the latest in high speed, high current class D designs offering high power and superior sound quality in compact footprints. The classic DD AUDIO style heat sink is used in this upgrade for max cooling with 50% more side wall thickness than industry norms and extra long fins to increase surface area.< br> < br> When every Watt matters, the SS850 delivers the best bang for the buck.< /p>