The Phoenix Gold ZR10P 10 Inch Active Subwoofer is a high-power audio component perfect for enhancing your in-car entertainment system. The variable bass boost of 0-12dB allows you to adjust the sound to your preference, while the aluminium casing provides durability and sleek aesthetics. Made in the USA, this Phoenix Gold subwoofer is a top choice for those looking to upgrade their car audio experience with a reliable and powerful component. Used item, came out of a vehicle, untested but in really good condition. No leads/cables/fixtures/fittings included, just the unit itself.