Maintain the features and fit of your factory system while installing a mono subwoofer amplifier with this KICKER K-Series smart-radio interface. The consistent resistive load prevents radio shutdown, and the two-channel design lets you add a pair of speakers. This small-size KICKER K-Series smart-radio interface doesn’t occupy much space, and the ability to handle up to 400W supports a high-powered amp. Compatible with most factory audio systems For a customized fit. Prevents sudden shutoffs Provides constant resistance so you get great, consistent sound throughout your trip. Maintains all factory radio functions Offers uncompromising use. Two channels This interface passes up to 400W (40V) of the input signal. Extremely compact design Allows easy integration into your vehicle.