What does a subwoofer converter do?
In techie terms: …it takes amplified speaker level signals and converts them into high quality preamp signals that can be fed into an amplifier. For us humans, that just means you’ll get phenomenal sound ALL while keeping your factory stereo and controls.
What does a 2 channel line output converter do?
Can you hook up subs to a factory amp?
Use a Converter
This is because the factory head unit generally tends to have speaker wires but does not have a preamp output that can convert them into RCA signals. This converter can make it highly convenient for you to connect the factory radio to the amplifier and subwoofer.