Specifications:-2-Channel Hi-Low Line Output Converter-Ideal for adding an amplifier to an OEM system-Converts 2 channels of speaker wire to RCA outputs-Gold-Plated contacts for maximum signal transfer-Independent Level Control-Auto remote amp turn on-Adjustable gain control-Signal Noise Eliminator-Compact design-Used when connecting factory speaker wire from the stereo to an aftermarket amplifierThis is used typically to give you rca outputs to add a amplifier or other audio equipment to a factory car stereo system