PrecisionPower 5075DX is a versatile four-channel amplifier and crossover in one, giving you the power and flexibility to customize your car audio system to your exact preferences. With adaptive MOSFET switching power supply, over-current protection, internal bridging capabilities, and a fixed input sensitivity, this amplifier is engineered to deliver exceptional performance and reliability. The crossover features two non-volatile presets, low pass and high pass crossover frequencies, low pass and high pass level controls, all optionally remote controlled.