Maxxsonics MX-2 Deluxe High-to-Low Level Converter Converts and filters high-level factory speaker wires into ultra-clean unbalanced (RCA) low-level signals to an aftermarket amplifier High Level Inputs: Accepts all types of high-level input signals including floating ground type, low and high voltage speaker wires Audio Signal Sense: Speaker audio signal detection automatically turns on the Controller and the amplifier (MX-2 has both remote wire and signal sense capabilities) Remote Output: Built-in amplifier circuit activates any aftermarket +12 volt amplifier upon radio activation Input and Output Level Control: The system provides high level input and output level (gain) control for both full range and subwoofer signals