Most factory stereos, even premium systems, protect speakers by reducing bass output when the volume is turned up. That's OK in a stock system, but this limitation will hamper low-frequency performance if you want to upgrade your factory stereo with amplifiers and subwoofers.
The MTX re-Q senses the input level from the factory stereo, adding more bass at high volume levels, while keeping bass response balanced when the volume is low. Now you can keep your factory stereo and its steering wheel controls while truly improving the sound.
The re-Q wires up to the speaker outputs of your factory stereo, and its stereo and subwoofer preamp outputs connect to your amplifiers. You'll find individual gain controls for the right, left, and sub outputs, plus low-pass and subsonic filters for maximizing your sub's performance. A bass enhancement switch lets you kick in a little more bump if you desire.