Another popular way to connect an amplifier to a factory radio is to use something called a line output converter. It connects to the factory radios speaker wires and converts the speaker-level signal to a preamp-level signal. This lets you use RCA cables to run that signal to your amplifier.

Can you run subs on a stock radio?

For us humans, that just means youll get phenomenal sound ALL while keeping your factory stereo and controls. So now you know – its definitely possible to install a subwoofer and amplifier to your factory system, and still have it sounding good.