ALPINE KTP-190U Universal Mono Power Pack
Though it is little, it is fierce!
Add higher output to your factory subwoofer without taking up much space. The KTP-190U Universal Mono Subwoofer Power Pack amplifies a factory installed subwoofer, delivering up to a 150% power increase over the original power from the head unit's built-in amplifier. Use the power pack to power a small aftermarket subwoofer for your special applications.