Kicker 46KISLOAD4 K-Series Smart-Radio Interface for adding an aftermarket full-range amplifier Want to add an aftermarket full-range amplifier to your factory audio system? Some modern radios require a consistent level of resistance (called a “load”) to keep playing through the entire trip. Without that load, the stereo system can shut off unexpectedly. The KISLOAD4 Smart-Radio Interface prevents sudden shut-offs by making sure the resistance stays consistent. You get great, consistent sound for the entire ride. Add an aftermarket full-range amplifier to high-power factory audio systems Passes up to 100 watts (20 volts) of input signal Four channels Maintains all factory radio functions Prevents factory audio systems from shutting off unexpectedly Extremely compact design