The Power TM750X1BD 750 watt mono ultra compact amplifier is built on Rockford Fosgate's patented class bd technology platform. This design creates a highly efficient design that reduces the electrical impact on the charging system by using the efficient class d technology while maintaining fidelity combining it with class b topology.; Class bd Technology Rockford Fostgate proprietary low impedance constant power Differential inputs with high level auto turn-on feature Upgraded RCA connectors 8 AWG spring compression wiring terminal AP remote out feature when using high level inputs 2013 PLC2 remote ready C.L.E.A.N. input/output clip detection and indicator LEDs Top mounted controls Dual fan cooled Real time thermal sensing Dual extruded heat sinks CEA-2006 and CE Compliant Discrete surface mount technology Marine grade two part epoxy coating on circuit boards