ROOM FILLING - 8 inch woofer with 250 watts of premium bass you can feel EASY POSITIONING - Big bass in a small package allows for ideal placement. Add an audioengine W3 wireless subwoofer kit and go wireless PLUG AND PLAY - Works with all speakers, receivers and turntables equipped with RCA analog output. Upgrade any music speakers, bookshelf speakers, or home theater speakers effortlessly GREAT FOR - Gamers, movie buffs and music lovers for home theatre, surround sound or gaming PREMIUM QUALITY - Heavy duty hand-painted and hand-finished MDF cabinet, anti-resonant steel frame, and heavy-duty rubber speaker surround, with selectable crossover frequency adjustment, and phase switch