AudioControl LC2i 2 Channel RCA Line Out High to Low Converter with Accubass2 CHANNEL ACTIVE LINE OUTPUT CONVERTER WITH ACCUBASS The LC2i allows for easy factory sound system upgrades without disturbing any factory features and functions. Adding aftermarket amplifiers and subwoofers to factory source units becomes simple. The LC2i is installed after the factory amplifier, so it can be added to any factory system. With AudioControls active speaker level inputs, youll get much better bass signal than with passive converters.