Rockville RTB80A 8" 400 Watt Powered Subwoofer Bass Tube + MP3 Input + Amp Kit 8 400w Powered Subwoofer Bass Tube. Integrated, built-in 250 Watts RMS Rated amplifier Rear aero vent bass system. Speaker level and RCA line-level input. Adjustable bass crossover. Dashboard adjustable bass remote control. Molded steel woofer grill. Four steel mounting brackets + two canvas straps with Velcro fasteners. Tube is covered in durable aviation grade tweed with embroidered logo. 8 Gauge 2 Channel Car Amplifier Wiring Installation Kit. (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable. 17 8 Gauge Translucent Blue SuperFlex Power Cables. 17 18 Gauge Blue Remote Cable. 17 16 Gauge Clear Speaker Wire. 3 8 Gauge Clear SuperFlex Ground Wire Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets. Soft abrasion proof insulating jacket allows for 100% improved flexibility. PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F (1) RTB80A 8&#034; 400 Watt Powered Subwoofer Bass Tube + MP3 Input (1) Rockville RWK81 8 Gauge Complete Amp Wire Kit with RCA Cable Rockville RTB80A 8 400w Powered Subwoofer Bass Tube 400 Watts Peak/200 Watts RMS 8 High power woofer in vented tubular enclosure Integrated, built-in 250 Watts RMS Rated amplifier Rear aero vent bass system Speaker level and RCA line-level input Frequency response: 30Hz-200Hz Sensitivity: 105 dB Adjustable bass crossover Molded steel woofer grill Four steel mounting brackets + two canvas straps with Velcro fasteners Tube is covered in durable aviation grade tweed with embroidered logo Dimensions: 8.75 x 19 Rockville RWK81 8 Gauge 2 Channel Car Amplifier Wiring Installation Kit (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable 17 8 Gauge Translucent Blue SuperFlex Power Cables 17 18 Gauge Blue Remote Cable 17 16 Gauge Clear Speaker Wire 3 8 Gauge Clear SuperFlex Ground Wire Gold Plated AGU Heat Resistant Fuse Holder 60 Amp AGU Gold Plated Fuse 7 Split Tube Loom Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets Soft abrasion proof insulating jacket allows for 100% improved flexibility PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F