A 500W 18" active subwoofer and an additional 2x 250W integrated full range amplifier for connecting wide range tops. This subwoofer is solidly designed, compact and produces excellent earthshaking bass tones of a high quality. Features a SUB frequency range of 20-200Hz, an echo-mode, stereo line inputs and a protecting-grille. Suitable for mobile DJs, medium/large bars, all kinds of parties, at home etc..