Mirage LF100 house powered active subwoofer. The sub is in great working and cosmetic condition - the amplifier section is rated 100W with a 8" woofer in front. Dimensions: 9.625" High, 15.625" Wide and 10.875" Deep! I will have it hooked up to the garage stereo so you can hear it before buying, I can also give you a sub cable too! The price is $80 firm, not negotiable!