The SVS PB16 Ultra Subwoofer Gloss Black is the end result of SVS engineers' passion for brilliant bass performance and expert engineering. Entertain yourself with this SVS subwoofer. Its 16-inch driver produces thunderous output, and the Sledge STA-1500D amplifier uses discrete MOSFET output to push the subwoofer's power limits. This SVS subwoofer has a structurally sound cabinet that lessens the chance of unwanted resonance.