Your Acura TL has a total of 6 speakers that are powered by the factory amplifier. When replacing the factory radio using our radio kit you are able to keep all of the speakers except the center channel. The front door speakers, tweeters, rear deck speakers and the factory subwoofer will all continue to work; the center dash speaker will not work. Our harness integrates with the factory amplifier to keep all your speakers working. Your navigation touchscreen and factory backup camera will continue to function but there will be no audio prompts from the factory navigation. You will lose Sirius XM and the factory AUX input. The steering wheel controls including volume up, volume down, next, previous and mode will work. The call control buttons are not retained. The factory hands free Bluetooth is disabled and you will need to use the aftermarket radios Bluetooth features.