1000 Watts Total System Power Output. MOSFET Pulse Width Modulated Power Supply. Built-In Variable Low/High/Subwoofer Crossover. High/Low Level Input. 2 Ohm Stereo Stable Pyramid prides itself on solid car audio without the huge price tag. The PB717X is no exception, featuring two MOSFET-powered channels of 50 watts RMS (75 watts at 2 ohms), bridgeable for subwoofers, and selectable high- and low-pass crossover modes for different applications.