AudioControl's LC8i 8-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 LC8i accepts speaker-level signals, so you can use it with just about any setup, even high-powered amplified systems. 8 Speaker Level Inputs 8 Preamp Outputs Channel Summing GTO - Signal Sensing Inputs 12 Volt Trigger Output