This is used to add and aftermarket amp to your car stereo while still using the factory head unit. "AudioControl's LC6i 6-channel line output converter (LOC) allows you to add aftermarket amps, speakers, and subs to your car's factory radio, so you can enjoy better and more powerful sound without losing climate controls, voice-activated functions, or other built-in factory features. The LC6i accepts speaker-level signals, so you can use it with just about any setup, even high-powered amplified systems" Includes three rca cables to connect to amp. Listed at $270 on Bestbuy.ca. Check website link below for more info or email me if you have any questions. Check my other ads for more car stereo equipment