Amplified Bass Box With 12Sub-woofer. Frequency response: 25Hz-3.5 KHz. Input Sensitivity RCA input: 0.2-3V. Variable input sensitivity: RCA input 0.2V to 3V. Also now comes with free 10 Gauge wiring kit included all ready to go!The item "12 Active Subwoofer Bass box Car Audio Built in Amplifier Easy install free Kit" is in sale since Thursday, June 25, 2020. This item is in the category "Vehicle Parts & Accessories\In-Car Technology, GPS & Security\In-Car Entertainment\Subwoofers". The seller is "caraudioz" and is located in Thornton Heath. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.