MOSFET PWM Power Supply, Metal Oxide Semi-conductor Field Effect Transistors with Pulse Width Modulated circuitry make up each DEMON amplifiers power supply. MOSFET transistors increase durability and longevity over bi-polar counterparts. Variable 12dB Crossovers filter out frequencies that could cause damage to speakers, or that subwoofers can"t play via 12dB/octave slope high pass, low pass, & subsonic crossovers. All DEMON series amplifiers feature an 18dB 45Hz parametric bass boost. Select models offer variable boost level adjustment to match the limitations of your subwoofers. Remote Gain Control allows amplifier level adjustment from a remote location in the vehicle. High Level Inputs you keep desired features like satellite radio or GPS navigation of the factory radio and integrate a DEMON amplifier using high level inputs. Connect the speaker outputs of the factory radio to the color coded high level inputs. Additional Features: Regulated Power Supply, 2-Ohm Stable Class A/B Full Range, 200mV-6V Low Level Inputs, Tri-Mode Capable, Three-Way Protection, Circuitry, 4 ga. Power & 8 ga. Speaker Terminals, Extruded Aluminum Chassis, Brushed Aluminum Finish with Black Anodizing