The JL Audio Core 4-Way Audio Interconnect Splitter (XD-AICS-1F4F) is designed to easily split audio output signals to multiple devices, providing enhanced flexibility for your audio system setup. Ideal for automotive, marine, and powersports applications, this splitter is built to withstand demanding environments. Note: This splitter is meant for splitting output connections and should not be used as an input-summing device. Not for input-summing use Durable construction for tough environments Easy installation & flexibility for system setup